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www.elsevier.com/locate/jom
Journal of Operations Management 25 (2007) 83–109
Examining the effects of contextual factors on TQM and
performance through the lens of organizational theories:
An empirical study
Ismail Sila *
Department of Finance and Management Science, College of Commerce, University of Saskatchewan,
25 Campus Drive, Saskatoon, Sask., Canada SK S7N 5A7
Received 20 April 2005; received in revised form 25 October 2005; accepted 13 January 2006
Available online 20 March 2006
Abstract
Although much has been written about TQM, little attention has been paid to the potential effects of contextual factors on TQM
and TQM–performance relationships. The use of organizational theory to formulate propositions regarding the effects of such
factors is especially scarce in the TQM literature. This study uses institutional theory and contingency theory as the basis to test a
number of such propositions. First, a model of TQM and organizational performance is developed. Then using survey data, the
effects of five contextual factors – three institutional factors and two contingency factors – on the implementation of TQM practices
and on the impact of TQM on key organizational performance measures are analyzed within a TQM–performance relationships
model framework. The three institutional factors include TQM implementation, ISO 9000 registration, and country of origin, and
the two contingency factors include company size and scope of operations. The results show that the implementation of all TQM
practices is similar across subgroups of companies within each contextual factor. In addition, the effects of TQM on four
performance measures, as well as the relationships among these measures, are generally similar across subgroup companies. Thus,
for the five contextual factors analyzed, the overall findings do not provide support for the argument that TQM and TQM–
performance relationships are context-dependent. The implications of the study for managers and researchers, as well as study
limitations, are also discussed.
# 2006 Elsevier B.V. All rights reserved.
Keywords: Quality management; Organizational behavior; Interdisciplinary; Empirical research methods; Questionnaires/surveys/interviews
1. Introduction
In general, previous studies obtained mixed results
about the success and failure rates of total quality
management (TQM). Some of these studies reported
estimates of TQM failure rates as high as 60–67%
(Dooyoung et al., 1998). However, other studies yielded
more optimistic results. For instance, according to a
* Tel.: +1 306 966 2549; fax: +1 306 966 2515.
E-mail address: [email protected].
0272-6963/$ – see front matter # 2006 Elsevier B.V. All rights reserved.
doi:10.1016/j.jom.2006.02.003
study conducted by Mohrman et al. (1995), 83% of the
surveyed companies had a ‘‘positive or very positive’’
experience with TQM, and 79% planned to ‘‘increase
or greatly increase’’ their TQM initiatives in the next
3 years.
One likely reason for some of the unsuccessful
TQM implementations is the possibility that TQM is
context-dependent. That is, contextual factors such
as company size and scope of operations might play a
role in the implementation of TQM practices and out-
comes. However, this issue has largely been ignored in
the literature. Thus, one of the objectives of this study
I. Sila / Journal of Operations Management 25 (2007) 83–10984
is to empirically analyze and compare TQM practices
across companies with different characteristics using
several contextual factors. The study will also examine
how these factors affect the relationships among TQM
and key organizational performance measures. These
analyses are intended to shed light on whether the
universal or the context-dependent approach to TQM
is warranted. The use of organizational theory to test
the validity of these two approaches has been scarce in
the TQM literature. To fill this void, this study uses
two organizational theories, institutional theory and
contingency theory, as the basis to formulate proposi-
tions regarding the effects of contextual factors on
TQM practices and TQM–performance relationships.
There are differing views on whether a context-
dependent or universal approach to TQM implementa-
tion is appropriate. However, despite a lack of empi-
rical evidence, the assumption of universal applicability
has permeated the literature with little attention being
given to the context-dependent argument. Several
recent studies (e.g., Sousa and Voss, 2002; Sila and
Ebrahimpour, 2002, 2003) also emphasized the need
to conduct contingency studies in the field of TQM.
One of the earlier empirical studies in the quality
management area that analyzed the effects of several
contextual factors on the implementation of TQM
practices was conducted by Benson et al. (1991). This
study obtained mixed results in that although company
type explained the variation in the ‘‘actual quality
management practices’’ implemented, other factors
including company size and manager type did not. It can
be argued that this study did not have a big following
since very few similar studies were published in
subsequent years. For instance, a study by Martinez-
Lorente et al. (1998) used data from Spanish industrial
companies to analyze the effects of several company
characteristics such as size, nationality, conviction
about the benefits of TQM, and perceived product value
on the application of TQM. Most of the other empirical
studies in this area mainly focused on cross-country
comparisons of TQM practices (e.g., Adam et al., 1997;
Solis et al., 2000; Rungtusanatham et al., 2005) or the
effect of company size on these practices (e.g., Ahire
and Golhar, 1996). In addition, Sousa and Voss (2001)
analyzed manufacturing strategy as a contextual factor
and found evidence that TQM practices were contingent
on manufacturing strategy.
In these previous studies that analyzed contextual
factors, either no performance measures or a limited
number of measures were used, or the relationships
among TQM and performance measures were not
analyzed within a TQM–performance relationships
model. Overall, a limited number of such empirical
studies did not provide conclusive evidence for the
validity of either the universal or context-dependent
approach to TQM. This study develops a structural
equation modeling (SEM) model, where the combined
effects of seven TQM practices on four measures of
organizational performance, as well as the effects of
these performance measures on each other, are tested
using survey data. This model is also tested using five
contextual factors by conducting multiple group
analysis to determine whether the model relationships
are invariant (i.e., equivalent) across subgroups of
companies within each contextual factor.
2. Model and hypotheses
An extensive review of the TQM literature showed
that the TQM construct could be measured by seven
general categories of practices including leadership,
strategic planning, customer focus, information and
analysis, human resource management (HRM), process
management, and supplier management. A description
of these practices and the supporting literature for them
are provided in Table 1. These practices are also
consistent with the Malcolm Baldrige National Quality
Award (MBNQA) criteria as suggested by Sila and
Ebrahimpour (2003), who analyzed the TQM practices
extracted by 76 empirical TQM studies and categorized
them under the 2002 MBNQA framework. The results
of an empirical study by Curkovic et al. (2000a) also
showed that using the MBNQA framework, companies
could achieve the implementation of TQM, which also
indicated that the MBNQA was compatible with TQM
practices. However, in contrast to the MBNQA frame-
work, supplier management was used as a separate
practice in the current study since supplier management
has been very critical for many organizations in recent
years as a result of the growing importance of supply
chain management. In addition, as shown in Table 1,
this practice has been extracted as a separate TQM
factor by a number of previous empirical studies. Using
it as a separate practice in the proposed model would
also make it possible to assess its significance for the
TQM construct, as well as compare its implementation
across companies with different characteristics.
The four performance variables used to measure
organizational performance in four key business areas
include human resource results, customer results,
organizational effectiveness, and financial and market
results. The items constituting each measure and the
supporting literature for these items are listed in Table 1.
Fig. 1 shows an SEM model of the nine hypotheses
I. Sila / Journal of Operations Management 25 (2007) 83–109 85
Fig. 1. A model of the relationships among TQM and key organizational performance measures and structural path analysis results for the full
sample (*p < 0.001).
Table 1
TQM practices and performance measures used in the model
TQM practices and
performance measures
Description of TQM practices and
performance measures
Supporting literature for TQM practices and
performance measures
Leadership Top management and supervisory commitment
and leadership; public responsibility
and citizenship
Flynn et al. (1994), Powell (1995), Anderson et al. (1998),
Wilson and Collier (2000), Sun and Cheng (2002)
Strategic planning Quality mission, goals and policy; strategy
development and deployment
Mohrman et al. (1995), Black and Porter (1996),
Raghunathan et al. (1997), Dow et al. (1999),
Solis et al. (2000), Sun and Cheng (2002)
Customer focus Customer and market knowledge; attention
to customer satisfaction; management
of customer relationships
Powell (1995), Ahire et al. (1996b),
Adam et al. (1997), Anderson et al. (1998),
Solis et al. (2000), Sun and Cheng (2002)
Information and
analysis
Performance measurement and analysis;
information management; use of information
technology; quality tools; benchmarking
Powell (1995), Samson and Terziovski (1999),
Anderson and Sohal (1999), Wilson and Collier (2000),
Solis et al. (2000), Sun and Cheng (2002)
Human resource
management
Employee involvement; employee empowerment;
teamwork; rewards, recognition and performance
appraisal; employee training
Flynn et al. (1994), Black and Porter (1996),
Rao et al. (1997a), Anderson and Sohal (1999),
Samson and Terziovski (1999), Wilson and Collier (2000),
Sun and Cheng (2002)
Process management Product and service design; process control;
innovation and continuous improvement of
processes, products and services
Saraph et al. (1989), Flynn et al. (1994), Powell (1995),
Anderson et al. (1995), Samson and Terziovski (1999),
Wilson and Collier (2000), Sun and Cheng (2002)
Supplier management Supplier quality; supplier involvement;
supplier relationships
Saraph et al. (1989), Powell (1995), Ahire et al. (1996b),
Rao et al. (1999), Solis et al. (2000), Curkovic et al. (2000b),
Sun and Cheng (2002)
Human resource
results
Employee turnover rate; employee absenteeism;
number of employee suggestions received;
employee job performance
GAO (1991), Adam et al. (1997),
Paauwe and Richardson (1997),
McAdam and Bannister (2001), NIST (2002)
Customer results Customer retention; reliability and timely delivery
of products and services; personalized service;
value for the money spent
GAO (1991), Dean and Bowen (1994),
Hendricks and Singhal (1997),
Atkins et al. (2002), NIST (2002)
Organizational
effectiveness
Cost; quality; productivity; cycle times;
number of errors or defects;
supplier performance
Deming (1986), GAO (1991),
Hendricks and Singhal (1997),
Kim et al. (2002), Rust et al. (2002)
Financial and
market results
Market share; profit; return on total assets
(ROA); overall competitive position;
number of successful new product
and service introductions
Shetty (1987), GAO (1991), Juran (1992),
Hendricks and Singhal (1997),
Gunasekaran (2002), NIST (2002)
I.S
ila/Jo
urn
al
of
Op
eratio
ns
Ma
na
gem
ent
25
(20
07
)8
3–
10
98
6
Table 2
Comparison of TQM practices across different studies
Saraph et al. (1989) Flynn et al. (1994) Ahire et al. (1996b) Dow et al. (1999) Rao et al. (1999) Wilson and Collier (2000) The current study
The role of top
management
leadership
Top management
support
Top management
commitment
Top management commitment Leadership Leadership
Quality citizenship
Shared vision Strategic quality planning Strategic planning Strategic planning
The role of the quality
department
Customer
involvement
Customer focus Customer focus Customer orientation Customer focus
Quality data and
reporting
Quality
information
Internal quality
information usage
Use of
benchmarking
Quality information availability Information and analysis Information and
analysis
Benchmarking Quality information usage
Benchmarking
Training Workforce
management
Employee training Workforce
commitment
Employee training Human resource
development and
management
Human resource
management
Employee relations Employee empowerment Use of teams Employee involvement
Employee involvement Personnel training
Product/service design Product design Design quality management Product/process design
Process management Process
management
Statistical process
control usage
Process management Process management
Supplier quality
management
Supplier
involvement
Supplier quality
management
Cooperative
supplier relations
Supplier quality Supplier management
Product quality Internal quality results Customer focus
and satisfaction
Organizational
effectiveness
Supplier performance External quality results Financial results Customer results
Financial and market results
Human resource results
I. Sila / Journal of Operations Management 25 (2007) 83–109 87
developed using literature support. Table 2 suggests
that the TQM practices included in this study are
consistent with those used by previous studies.
However, the items measuring each TQM practice
is more comprehensive compared to these studies.
This study also incorporates a greater number of
performance measures and tests the relationships
among them. Previous studies that integrated perfor-
mance measures into their models mostly included
one or two measures, each of which was operationa-
lized by a single item. In addition, these measures
were generally used as dependent variables. In this
study, three of the four performance measures serve as
both independent and dependent variables, each of
which is measured by at least four items. Although
this study incorporates most major TQM practices and
a large number of key performance measures, no
claim is made that they are exhaustive, if indeed such a
claim is possible. The nine hypotheses formulated are
discussed below.
2.1. The effect of TQM on human resource results
The implementation of TQM is one of the most
complex undertakings for a company, as it entails
changes in organizational culture and affects employees
(Kanji and Barker, 1990). It is important to analyze how
organizational changes brought about by TQM will
affect employees simply because employees are key
organizational stakeholders (Mohrman et al., 1995).
However, research analyzing TQM’s effect on human
results has been scarce (Guimaraes, 1996).
Many TQM elements are people-oriented and
include such practices as teamwork, employee empow-
erment and involvement in decision-making (Guimar-
aes, 1996). Making such practices part of TQM
contributes positively to employee results such as
employee satisfaction. This is because the new
processes put in place as a result of TQM are more
likely to be embraced by employees if they are actively
involved in developing these processes (Mohrman et al.,
1995).
A case study conducted by McAdam and Bannister
(2001) suggested that the implementation of TQM in
a company contributed to a positive working environ-
ment, in both physical and psychological sense, and
resulted in reductions in employee absenteeism.
Mohrman et al. (1995) reported that a composite of
several core TQM practices such as quality improve-
ment teams and cross-functional planning had a
significant association with employee satisfaction
and quality of work life. Other studies also showed
that TQM practices had a positive correlation with
employee satisfaction (Grandzol, 1998) and annual
employee turnover rate (Adam et al., 1997). Consistent
with these studies, a study by Boselie and van der Wiele
(2002) indicated that employee perceptions of TQM
concepts led to a higher level of satisfaction and less
intention to leave the organization. In addition,
according to a study conducted by Guimaraes
(1996), employees had higher job satisfaction, job
involvement, commitment to the organization, and
intentions to stay with the company as a result of TQM.
Thus we have the following hypothesis.
H1. TQM has a direct, positive effect on human
resource results.
2.2. The effect of TQM on customer results
A company’s success in the long term depends on
how effectively it satisfies its customers’ needs on a
constant basis (Brah et al., 2002). Therefore, TQM’s
success is determined by how willing the organization
is to change and whether it uses customer satisfaction
as a measure in assessing the success of its decisions
and actions (Madu and Kuei, 1993). Although many
companies may realize the significance of being
customer-oriented, they usually face a challenge in
monitoring and measuring their customers’ expecta-
tions, experience, and satisfaction with their products
(Sebastianelli and Tamimi, 2002). Many companies
implementing TQM attempted to meet this challenge
by encouraging their employees to get actively involved
in achieving customer satisfaction. For instance, they
tied their employees’ performance evaluations to cus-
tomer care indicators (Wilkinson et al., 1993).
Deming (1982) argued that customer satisfaction
was the most important outcome of TQM practices.
Most quality award models also recognize customer
results as a significant TQM outcome. In fact, the
customer results measure is assigned 20% of the overall
scores in the European Foundation for Quality Manage-
ment (EFQM) model (EFQM, 2004), the highest
percentage for any criterion in the model. Several
researchers including Filiatrault et al. (1996), Grandzol
(1998) and Parzinger and Nath (2000) found a positive
relationship between TQM practices and customer
results. A study by Das et al. (2000) reported a positive
relationship between TQM practices and customer
satisfaction performance. Timeliness of delivery was
also found to be a significant outcome of TQM practices
by Anderson and Sohal (1999). Hence we have the
following hypothesis.
I. Sila / Journal of Operations Management 25 (2007) 83–10988
H2. TQM has a direct, positive effect on customer
results.
2.3. The effect of TQM on organizational
effectiveness
A commitment to quality over cost and schedule
results in improvements in cost and delivery perfor-
mance in the long run (Ferdows and Demeyer, 1990).
TQM practices not only help to improve the quality of
products but also reduce scrap, rework, and the need for
buffer stock by establishing a stable production process.
These in turn minimize production costs and throughput
time. Consequently, reduction in throughput time
enables a company to improve delivery performance.
TQM practices can also help improve flexibility. For
instance, workforce flexibility, where employees are
trained in multiple skills and are empowered to make
decisions, can enable a company to make changes in
production volume without having any negative effects
on production cost (Ahmad and Schroeder, 2002).
Through continuous improvement, not only errors and
defects can be prevented but also product cycle times
can be reduced, thereby improving productivity (Huang
and Lin, 2002). Improvements in manufacturing cycle
times have been well documented in one company that
implemented TQM. These improvements were partly
attributed to teams’ focus on their internal customers
and their knowledge of these customers’ requirements.
These teams’ active involvement equipped them with
the knowledge of what the production priorities were
and how each process fit into the overall production
process (McAdam and Bannister, 2001).
A study by the US Government Accounting Office
(GAO, 1991) examined the effect of TQM practices on
the performance of 20 US companies that won the
MBNQA. The study found that these practices had a
strong relationship with quality and productivity,
among others. Similarly, Carter and Narasimhan
(1994) argued that TQM’s emphasis on process
improvement contributed to productivity increases
through effective utilization of people and processes.
Deming (1986) also suggested that TQM could be
effective in achieving organizational effectiveness. That
is, TQM could minimize total costs through sole
sourcing. By concentrating on a small number of
suppliers, providing them with the needed training and
technology, and monitoring their performance, varia-
bility in suppliers’ products could be reduced, improv-
ing product quality; costs of delay and rework could
also be minimized. Thus, TQM practices could be
implemented to achieve superior supplier performance.
According to Anderson et al. (1998), several TQM
practices including training, information, and supplier
management had positive relationships with ‘‘opera-
tional results’’ measured by logistics cost performance,
effectiveness and efficiency of transaction processes,
and order cycle time. These findings were supported
by Tata et al. (2000), who found that the effect of
TQM practices on operational results were positive.
Thus we have the following hypothesis.
H3. TQM has a direct, positive effect on organizational
effectiveness.
2.4. The effect of TQM on financial and market
results
According to Buzzell and Gale (1987), financial
performance is an important measure of TQM out-
comes. This is consistent with Deming’s (1986)
argument that quality improvement leads to elimination
of waste, reduction of costs, and improved financial
performance. Juran (1992) contended that market share
was the ultimate test of the results of TQM
implementation since TQM led to higher sales.
Anectodal evidence also suggests that investments in
quality can lead to improvements in sales, return on
assets (ROA), and market share (Sankar, 1995).
However, some of the previous studies found no
relationship between TQM and financial and market
results measures. For instance, Curkovic et al. (2000b)
found no relationship between leadership, employee
empowerment, cross-functional quality teams and
performance measures such as ROA, return on
investment (ROI), and market share growth. Some
of the other studies that reported no linkages between
TQM and financial results included those by Cunning-
ham and Ho (1996) and Davis (1997). However, the
literature review conducted for this study indicated
that most of the studies found a positive relationship
between TQM practices and measures of financial and
market results. For instance, Curkovic et al. (2000b)
and Wilson and Collier (2000) did report a number of
such positive relationships. Mohrman et al. (1995) also
found that TQM practices had a positive effect on
profitability and competitiveness. Similarly, the find-
ings of a study by Anderson and Sohal (1999)
suggested that the effect of TQM practices on overall
competitiveness, sales, and market share was positive.
A more recent study by Hansson and Eriksson (2002)
showed that a sample of quality award-winning
Swedish companies that implemented TQM success-
fully had better financial performance than other
I. Sila / Journal of Operations Management 25 (2007) 83–109 89
companies of comparable size and their biggest
competitors. Several other studies that indicated a
positive relationship between TQM and financial
results included those by Hendricks and Singhal
(1997), Handfield et al. (1998) and Tena et al. (2001).
Therefore we have the following hypothesis.
H4. TQM has a direct, positive effect on financial and
market results.
2.5. The effect of human resource results on
customer results
The effect of employee fulfillment on customer
satisfaction is implicit in the Deming management
method, which views customer satisfaction as a natural
consequence of pride of workmanship. Pride of
workmanship is determined by how capable the
employees feel of delivering quality products and
services to customers (Anderson et al., 1994a).
Many service companies have also realized that
there is a strong relationship between employee per-
formance and customer satisfaction (Hartline and
Ferrell, 1996). As a result, the potential role of job
satisfaction in improving various work-related out-
comes (Hellman, 1997), and especially customer
satisfaction (e.g., Schneider and Bowen, 1985; Hallo-
well et al., 1996; Hartline and Ferrell, 1996), has drawn
many researchers’ interest. Hoffman and Ingram
(1992) found a positive relationship between job
satisfaction and customer-related behaviors. Other
studies reported both direct (e.g., Testa et al., 1998)
and indirect (e.g., Hallowell et al., 1996) relationships
between job satisfaction and customer satisfaction.
A number of studies (e.g., Heskett et al., 1994;
Rucci et al., 1998; Harrison and Freeman, 1999)
related employee results to customer satisfaction and
loyalty, and business performance. This cause–effect
relationship has been described as the ‘‘service-profit’’
chain by these studies and has been ascribed to
successful human resource practices, which are an
integral part of the TQM philosophy. A similar cause–
effect relationship can also be seen in the model
presented in Fig. 1, where human results directly affect
customer results, which in turn directly affect financial
and market results.
Retford (1998) emphasized the importance of
integrating customer results with employee results.
She argued that if employee satisfaction measures
and customer measures were designed in unison so that
they accounted for the interaction of customers and
employees, customer defections could be prevented.
For instance, employee retention, one of the measures
of employee results, could affect customer results
because experienced employees are more knowledge-
able about their organizations’ goals and the customers’
requirements (Schneider and Bowen, 1985). Hence, the
next hypothesis is as follows.
H5. Human resource results have a direct, positive
effect on customer results.
2.6. The effect of human resource results on
organizational effectiveness
The HRM and TQM literature have become
increasingly interlinked. This is partly due to the use
of similar theoretical concepts and assumptions such as
leadership, employee involvement and motivation,
teamwork, and training, and partly because both
HRM and TQM are being linked to business
performance in theory and practice (Boselie and van
der Wiele, 2002). Most of the previous studies (e.g.,
Huselid, 1995; Delaney and Huselid, 1996; Tsui et al.,
1997) focused on the relationship between human
resource practices and performance outcomes and
paid little attention to the effects of human resource
results on other performance measures. Some of these
studies (e.g., U.S. Department of Labor, 1993; Youndt
et al., 1996) found that human resource practices such
as selection and training contributed to productivity
and company performance. Ryan et al. (1996) also
argued that if the employees in a unit shared positive
attitudes and valued cooperation and collaboration,
productivity could be improved.
Although there is no extensive empirical evidence on
the effect of human resource results on various
performance outcomes, several studies did examine
such relationships. For instance, Paauwe and Richard-
son (1997) hypothesized that human resource activities
affected human resource results such as turnover and
absenteeism, which in turn contributed to productivity
and product or service quality. In addition, a report
prepared for the Canadian Policy Research Networks
suggested that workplace practices such as job design,
employee involvement, and training, which are strongly
emphasized by TQM, had a favorable impact on
employee satisfaction, absenteeism, tardiness, commit-
ment, motivation, effort, and performance, which in
turn had a positive effect on company performance, as
well as productivity and competitiveness (Anonymous,
2002). In addition, an empirical study by Grandzol
(1998) found that employee fulfillment had a positive
impact on ‘‘operational results’’ measured by produc-
I. Sila / Journal of Operations Management 25 (2007) 83–10990
tivity, cycle time, scrap/waste, energy/efficiency, and
material usage. Koys (2001) suggested that employee
retention would improve organizational effectiveness
in terms of lower costs, because a low turnover would
result in less hiring and training activities. Arthur (1994)
found that employee retention could also help improve
productivity. Thus we have the following hypothesis.
H6. Human resource results have a direct, positive
effect on organizational effectiveness.
2.7. The effect of organizational effectiveness on
customer results
TQM is generally viewed as a process-oriented
approach to improving customer satisfaction by
offering goods and services of high quality (Mehra
et al., 2001). The production of high quality products
and services at a reasonable price has a direct effect on
how external customers perceive their purchase-
consumption experience (Gustafsson and Johnson,
2002). This level of quality can be attained through
improved business processes that reduce defects, costs
(Rust et al., 2002; Napolitano, 2003), as well as cycle
times and inventories (Napolitano, 2003), which
eventually improve customers’ perception of quality
and increase customer satisfaction (Rust et al., 2002;
Napolitano, 2003). Atkins et al. (2002) also argued that
customer value was created through lowest cost,
highest quality, fastest cycle time, and highest overall
customer satisfaction.
The impact of TQM implementation on various
performance outcomes has been documented in many
companies. Among these outcomes, organizational
effectiveness measures such as reduced cycle times,
higher quality, and increased productivity were reported
as contributing factors to increased customer satisfac-
tion (Tan et al., 1999). A simulation study by Lai et al.
(2001) also found a positive relationship between
shorter cycle times and customer satisfaction. However,
not many empirical studies examined the effect of
organizational effectiveness measures on customer
results. One such study was conducted by Anderson
et al. (1998) who found that the effect of operational
results on customer satisfaction was positive. Agus et al.
(2000) reported that product quality had a major effect
on customer satisfaction. In addition, Voss and Black-
mon (1994) found a significant link between quality-in-
use and customer satisfaction. Hence we have the
following hypothesis.
H7. Organizational effectiveness has a direct, positive
effect on customer results.
2.8. The effect of organizational effectiveness on
financial and market results
Internal quality can directly affect costs and revenues.
Making improvements to internal quality can result in
higher productivity, reduce internal costs and thus have a
direct, positive impact on profits (Gustafsson and
Johnson, 2002; Shetty, 1987). Even though some quality
improvements may concurrently lead to higher revenues
and lower costs, improvements focused on affecting
customer perception of quality usually increase profits
through revenue expansion and those focused on
streamlining internal processes increase profits through
cost reduction (Rust et al., 2002). Shetty (1987) found
that companies that improved the quality of their
products realized increases in market share by five or six
times faster than those companies that saw the quality of
their products decline. In addition, the market share of
these companies grew three times faster than the market
share of companies that had product quality levels
similar to those of their competitors.
Research conducted by Rogers et al. (1982) showed
that adjustment of organizational effectiveness mea-
sures such as order cycle time, variability of delivery
time, and communication time could help increase
profits. Other studies (e.g., Kim et al., 2002; Gunase-
karan, 2002) suggested that cycle time had a positive
effect on competitiveness. In addition, reduction of
cycle times and manufacturing costs, as well as
elimination of waste, could help improve productivity
and ROA (Omachonu and Ross, 1994).
Some of the previous empirical studies also examined
the relationship between measures of organizational
effectiveness and financial and market results. Studies on
the profit impact of marketing strategies (PIMS), where
the effects of various marketing strategies on financial
performance at over 500 corporations were analyzed,
revealed that there was a strong relationship between
product or service quality and financial indicators
(Buzzell and Gale, 1987). Curkovic et al. (2000c) also
found that quality had a positive effect on financial
and market performance measures such as market share,
ROI, and ROA. Thus we have the following hypothesis.
H8. Organizational effectiveness has a direct, positive
effect on financial and market results.
2.9. The effect of customer results on financial and
market results
Most of the previous studies that examined the
relationship between customer-related performance and
I. Sila / Journal of Operations Management 25 (2007) 83–109 91
financial and market results chose customer satisfaction
as the main measure of customer-related performance.
However, some researchers (e.g., Crosby and Johnson,
2002; Wright and Snell, 2002) argued that it was not
only customer satisfaction that led to positive financial
results but customer retention as well. Although
marketing theory and practice suggest that companies
can improve their performance by satisfying their
customers, this relationship is still being debated
(Yeung et al., 2002). The general argument is that
customer satisfaction creates customer loyalty and
retention, which results in repeat purchases, growth in
sales, a reduction in operating costs, and an increase in
profits (Das et al., 2000; Yeung and Ennew, 2001).
Increased retention rates can increase profits (Fornell
and Wernerfelt, 1988; Reichheld and Sasser, 1990),
because the selling costs to existing customers are much
lower (Peters, 1987).
The PIMS studies also found a positive relationship
between customer satisfaction and market share
(Buzzell and Weirsema, 1981; Craig and Douglas,
1982). Other studies reported a significant positive
relationship between customer satisfaction and reven-
ues (e.g., Zeithaml et al., 1996; Rucci et al., 1998) and
profitability (e.g., Anderson et al., 1994b; Hallowell,
1996; Bernhardt et al., 2000). Filiatrault et al. (1996)
and Agus et al. (2000) also found a positive relationship
between customer satisfaction and financial results.
Therefore we have the following hypothesis.
H9. Customer results have a direct, positive effect on
financial and market results.
3. Contextual factors
The pioneers of quality such as Deming, Crosby
and Juran suggested that the quality management
principles were universally applicable. However, more
recently, other quality researchers (e.g., Dean and
Bowen, 1994; Sitkin et al., 1994) questioned this
argument suggesting that these principles could in fact
be context-dependent, which could render certain
TQM practices and tools inappropriate. Watson and
Korukonda (1995) also stated that there was no
empirical evidence to support the universal applic-
ability of TQM practices.
The context-dependent approach to administrative
innovations has also been discussed in the organiza-
tional theory literature. Administrative innovations are
concerned with either changing the structure of an
organization or its administrative processes and are
mainly related to the management of the organization
rather than its basic work activities (Damanpour, 1987).
Damanpour (1987) conducted a comparative analysis of
the relationships between six organizational factors
(functional differentiation, specialization, profession-
alism, administrative intensity, organizational size,
organizational slack) and several types of innovations
using data from public libraries located in northeastern
United States (US). His findings showed that these
factors had a significant effect on the adoption of admi-
nistrative innovations, although their effect on the adop-
tion of technological innovations was much greater.
In another study, Damanpour (1991) conducted a
meta-analysis of the relationships between 13 organiza-
tional attributes (mainly structural, process, resource,
and cultural variables) and organizational innovation.
An analysis of the effects of moderating variables on
these relationships showed that differences in organiza-
tional types such as industry, sector, structure, and
strategy could have different effects on the degree of
innovativeness. This was mainly attributed to different
environmental opportunities and threats that these
companies faced, providing support for a contingency
theory of organizational innovation.
Westphal et al. (1997) explored TQM in hospitals as
an administrative innovation that is open to various
interpretations and that can exhibit differences in
adoption across organizations. The authors suggested
that empirical evidence for the effects of TQM on
overall performance and knowledge of ideal form or
content of TQM programs were limited. Therefore, the
question of whether the institutionalization of TQM in
organizations should conform to normative forms of
adoption, or whether TQM should be customized to the
unique needs and capabilities of these organizations,
remained unanswered. According to institutional theory,
norms emerge based on the organizational performance
motives of early adopters exerting pressure on later
adopters to conform. Hence, Westphal et al. (1997)
argued that later adopters of TQM would imitate the early
adopters’ quality practices rather than customizing them
to their unique needs and capabilities. In addition, the
early adopters’ customization of these quality practices
would be expected to yield superior organizational
performance gains, whereas the later adopters’ con-
formity to normative TQM adoption would be negatively
associated with organizational performance benefits
(Westphal et al., 1997). These hypotheses were
empirically supported by the analysis conducted by
the authors. Thus, these studies provided evidence that
the implementation of administrative innovation such as
TQM and their effects on organizational performance
could be affected by contextual factors.
I. Sila / Journal of Operations Management 25 (2007) 83–10992
In the next section, we present a discussion of the
five contextual factors – three institutional factors and
two contingency factors – that will be used to test the
proposed model by drawing on institutional theory and
contingency theory. The propositions related to
institutional theory will be called institutional factors
and those related to contingency theory will be called
contingency factors.
3.1. Institutional factors
According to institutional theory, organizations
create structures to look legitimate to important
stakeholders. This is due in part to regulations,
procedures, and structures imposed on them by
environmental institutions. Organizations may be
forced to change their structures due to governmental
pressures, imitate the structures of other organizations
as a result of competitive pressures, or conform to
normative standards developed by such organizations
as accreditation companies and consumer organiza-
tions (Wagner et al., 2001). ISO registration, which is
one of the institutional factors in the current study, is
an accreditation process that seeks to standardize
systems for quality around the world. Thus, companies
need to conform to a number of normative standards to
obtain registration. However, since there is no
certification for TQM, there are no official guidelines
for implementation. In spite of this, companies
implementing TQM may imitate early adopters to
improve the quality of their products, services, and
processes in response to competitive pressures. As
suggested by Westphal et al. (1997), this imitation
would be expected to lead to similar TQM practices
across TQM implementers. As a result, TQM
implementers would differentiate themselves from
nonimplementers.
The last institutional factor analyzed, country of
origin, represents a cultural factor that may become
institutionalized at the country level (Homburg et al.,
1999). Different societies have different traits at the
regional or national level such as a ‘‘normative
institutional order’’, as well as unique cultural
characteristics and economic and industrial structures.
Therefore, the organizational practices of companies
that originate from different countries or regions may
diverge (Harzing and Sorge, 2003). This divergence
might also be witnessed in these companies’ approaches
toward the implementation of TQM practices.
Institutional theory also suggests that organizations
that conform to norms of acceptable practice can
achieve high levels of production efficiency and
effectiveness (DiMaggio and Powell, 1983; Carruthers
and Espeland, 1995). Hence, companies, for instance,
that implement TQM and are registered to ISO 9000
would be expected to have superior performance
compared to those companies that do not implement
TQM or are not ISO-registered.
3.2. Contingency factors
Contingency theory suggests that successful orga-
nizations choose structures and process characteristics
that ‘‘fit’’ to the degree of uncertainty in their
environment (Duncan, 1972; Miller, 1992). Contin-
gency factors that may affect the establishment of this
fit include both internal and external factors. Theorists
have used various constructs to operationalize internal
contingency factors, but these factors generally had
three dimensions in common: task variability, task
difficulty, and task interdependence (Gupta et al.,
1994). In the marketing literature, Homburg et al.
(1999) used differentiation and cost-leadership strat-
egy, and distribution and customer base as internal
contingency factors, and market growth, market-
related uncertainty, and technological turbulence as
external contingency factors. In health care quality
management area, Wagner et al. (2001) used con-
tingency factors such as centralization of decision-
making, formalization of regulations, and organiza-
tional size. Organizational size, used as an external
contingency factor by Gupta et al. (1994), is one of the
factors analyzed in the current study. The other
contingency factor included in this study is scope of
operations (i.e., domestic operating versus interna-
tional operating companies), which affects the degree
to which companies are exposed to uncertainty as a
result of the different environments they operate in.
Structural contingency theory is an extension of
contingency theory and attempts to explain context–
structure–performance relationships (Melan, 1998).
The theory suggests that organizations that can
establish a fit between organizational structure and
environmental uncertainty will achieve higher organi-
zational performance results (Schlevogt and Donald-
son, 1999; Ellis et al., 2002), while a misfit would have
a negative effect on organizational performance
(Donaldson, 2001). Within the context of contingency
propositions, using the practice of Reed et al. (1996),
this study assumes that it is fit that determines
organizational performance, and not the independent
effects of environmental uncertainty and TQM. The
propositions for each of the institutional and con-
tingency factors are discussed below.
I. Sila / Journal of Operations Management 25 (2007) 83–109 93
3.3. Institutional propositions
3.3.1. TQM implementation
TQM has become a recognized philosophy in the US
since the 1980s as a result of the success of Japanese
companies with the implementation of TQM practices,
as well as the early success of several US companies
such as Motorola and Ford with this philosophy.
Consequently, many US companies increasingly imple-
mented TQM programs (Ahire et al., 1996a). As
previously mentioned, the literature is not in agreement
with the benefits of implementing TQM. In this study,
however, approximately 70% of the companies that
implemented TQM stated that their program was
successful whereas 14% stated that it was unsuccessful.
The other 16% did not respond, while the 3% did not
know the results of their program. Thus, a big
percentage of TQM implementers (TQM companies)
rated their programs as being successful.
One of the objectives of this study is to compare
TQM companies with companies that never imple-
mented a TQM program (non-TQM companies) using
the proposed model. The companies were classified
into two groups as TQM companies and non-TQM
companies based on their response to a question
included in the survey asking them whether they
implemented TQM. If they did implement TQM, the
companies were also asked to state the duration of their
implementation and whether they considered their
TQM program as being successful. However, since
non-TQM companies may still be implementing TQM
practices either as part of another continuous improve-
ment program or as part of their regular business
operations, the term ‘‘non-TQM company’’ only
suggests that these companies never implemented a
TQM program.
The implementation of TQM practices is expected
to be more rigorous in TQM companies than in non-
TQM companies, because TQM companies allocate
more resources for the implementation of these
practices and focus their efforts on their effective
implementation (Lascelles and Dale, 1990; Ahire et al.,
1996a; Brah et al., 2002). In addition, TQM companies
are generally expected to achieve better business
performance than non-TQM companies as a result of
implementing these TQM practices more rigorously
(Powell, 1995; Ahire et al., 1996a; Brah et al., 2002). In
fact, Hendricks and Singhal (1997) found that
companies that effectively implemented TQM
achieved better performance results than non-TQM
companies in terms of profitability, revenues, costs,
capital expenditure, and total assets. In addition to such
financial performance measures, this study will use a
broader range of business performance measures to
compare the two groups within the proposed TQM–
performance relationships model framework.
Proposition 1. TQM practices are different across
TQM companies and non-TQM companies.
Proposition 2. The structural model relationships are
different across TQM and non-TQM companies.
3.3.2. ISO 9000 registration
ISO 9000 can be considered to be a subset of TQM.
ISO 9000 mainly deals with quality management systems
for the design, development, purchasing, production,
installation, and servicing of products and services.
However, the eight TQM practices added to the 2000
version of ISO 9000 brought ISO 9000 and TQM closer
together than ever before (Goetsch and Davis, 2003).
Overall, the literature suggests that many ISO-registered
companies view the registration process as a prerequisite
to TQM implementation (Escanciano et al., 2001). Yusof
and Aspinwall (2000) argued that ISO registration
contributed to a company’s achievement of the ‘‘total
system’’ associated with TQM. Thus, ISO-registered
companies would be expected to have more effective
TQM practices in place than non-ISO-registered
companies as a result of their ISO 9000 efforts.
The literature is not in unanimous agreement with
the effects of ISO 9000 registration on organizational
performance. Some of the previous studies (e.g.,
Terziovski et al., 1997; Simmons and White, 1999;
Lima et al., 2000) found that ISO registration did not
necessarily improve companies’ performance. On the
other hand, according to the International Organization
for Standardization, ISO 9000 can increase customer
satisfaction, provide cost and risk-management bene-
fits, and result in improved competitiveness (Goetsch
and Davis, 2003). In fact, Rao et al. (1997a) found that
ISO-registered companies had better quality manage-
ment practices and quality results than those companies
that were neither ISO-registered nor interested in
obtaining registration. Ismail and Hashmi (1999) also
reported better performance for ISO-registered compa-
nies compared to non-ISO-registered companies. A
study by McAdam and McKeown (1999) found that
37% of the surveyed companies reported improve-
ments, such as increases in productivity and sales and
reductions in costs and customer complaints. Overall,
77% of the companies reported being pleased or very
pleased with ISO. Lee and Palmer (1999) also reported
improvements in performance as a result of ISO
registration. Thus we have the following proposition.
I. Sila / Journal of Operations Management 25 (2007) 83–10994
Proposition 3. TQM practices are different across
ISO-registered and non-ISO-registered companies.
Proposition 4. The structural model relationships are
different across ISO-registered and non-ISO-registered
companies.
3.3.3. Country of origin
Although several cross-country studies were con-
ducted, where the similarities and differences in TQM
practices and performance measures across countries
were analyzed, this is still an area of research in quality
management that needs to be explored further. The
results of these studies were inconsistent. For instance,
some of the studies found that TQM practices were
similar across the compared countries (e.g., Adam
et al., 1997; Rao et al., 1997b), whereas others reported
differences (e.g., Raghunathan et al., 1997; Tata et al.,
2000). Most of these empirical studies used data
collected from companies operating in different
countries. However, the data in the current study were
collected from local and foreign companies operating
in the same country (i.e., the US). In fact, studies
comparing the TQM practices and performance of local
and foreign companies operating in the host country
using organizational theory and a TQM–performance
relationships model are nearly non-existent.
The issue of convergence versus divergence of
various practices across companies with different
countries of origin has not yet been resolved in the
international management literature, regardless of
whether the companies compared were located in the
same country or in different countries. Researchers
supporting the convergence hypothesis (e.g., Tung,
1981; Mendenhall and Oddou, 1985) argued that global,
industrial, and economic pressures would outweigh
cultural factors, resulting in convergence of structures,
processes, and practices across companies with
different countries of origin. On the other hand,
researchers supporting the divergence hypothesis
contended that cultural differences played an important
role in shaping these structures and practices differently
(e.g., Whitley and England, 1977; Hofstede, 1983).
However, Child (1981) argued that there was evidence
in support of both the convergence and divergence
hypothesis, where convergence mostly applied to
macrolevel variables such as structure and technology,
and divergence applied more to microlevel variables
such as human behavior within companies.
The convergence hypothesis and institutional theory
are congruent in that they both suggest that external
forces will compel companies to adopt similar
practices. Chung et al. (2000) analyzed the control
practices of multinational companies (MNCs) operating
in Australia related to knowledge flows, product flows,
and capital flows. The authors reported that these
control practices were similar across MNCs, indicating
that they converged due to normative and mimetic
pressures as suggested by institutional theory. Rungtu-
sanatham et al. (2005) also found evidence for the
convergence hypothesis by comparing Deming man-
agement principles across companies located in several
different countries. This study also takes the position
that US companies and foreign companies operating in
the US will mimic each other’s TQM practices and
create similar structures to look legitimate to important
stakeholders. As a result, these companies will also be
expected to have similar business performance. Thus we
have the following proposition.
Proposition 5. TQM practices are similar across US-
owned and foreign-owned companies operating in the
US.
Proposition 6. The structural model relationships are
similar across US-owned and foreign-owned companies
operating in the US.
3.4. Contingency propositions
3.4.1. Company size
TQM was first developed by large Japanese
companies and subsequently adopted by large US
companies (Powell, 1995). As a result, much of the
literature focused on the implementation of TQM in
large companies (Ghobadian and Gallear, 1997).
However, companies with different sizes have distin-
guishing characteristics that may have different effects
on how TQM is implemented and how TQM contributes
to organizational performance. For instance, small and
medium-sized companies (SMCs) have flatter manage-
ment structures and higher flexibility than large
companies (McAdam and McKeown, 1999), more
customer orientation, less complexity and better
communication due to informal relationships (Cagliano
et al., 2001) and are more likely to use innovative work
practices (Osterman, 1994; Walley, 2000), which may
make the implementation of TQM easier. On the other
hand, large companies are more formalized, specia-
lized, and decentralized (Germain and Spears, 1999)
and have more abundant resources than SMCs that
allow them to undertake TQM activities (Ghobadian
and Gallear, 1997; van der Wiele and Brown, 1998).
However, since it is difficult to achieve major change in
large companies, these companies may be less willing
I. Sila / Journal of Operations Management 25 (2007) 83–109 95
to undertake such change or may even give up on TQM
if problems arise early during implementation (Mohr-
man et al., 1995).
Large companies and SMCs also differ in terms of
the reasons why they implement TQM practices.
Although large companies implement these practices
due to corporate decision, company survival, and to
reduce costs, SMCs’ main goal is to meet customer
requirements. Accordingly, large companies emphasize
structural and organizational components of TQM,
such as training, feedback, and supplier management,
whereas SMCs focus on the soft sides of TQM such as
leadership and employee involvement (Sun and Cheng,
2002). A detailed analysis of the differences between
SMCs and large companies as they pertain to the design
and implementation of TQM is provided by Ghobadian
and Gallear (1997). These differences range from
structure, procedures and behavior to processes,
people, and contact.
There is also some evidence in the literature that
there are differences among large companies and SMCs
in terms of the benefits they obtain from TQM. For
instance, according to Hendricks and Singhal (2001),
small companies are more likely to realize greater
improvements in operating income and sales as a result
of implementing TQM practices. In addition, some
practices, such as employee participation, can be
implemented more successfully in smaller companies,
resulting in greater employee satisfaction (Manoo-
chehri, 1988). Overall, the literature suggests that the fit
of TQM practices and the TQM results achieved are
different in large companies and SMCs. Thus we have
the following proposition.
Proposition 7. The fit of TQM practices is similar
across small and medium-sized companies and differs
from the fit for large companies.
Proposition 8. The structural model relationships are
similar across small and medium-sized companies and
differ from those in large companies.
Note that, in this study, small companies were those
companies with less than 100 employees, medium-sized
companies included those with 101–500 employees,
and large companies had more than 500 employees.
3.4.2. Scope of operations
The extent to which companies operate in the global
marketplace (i.e., domestic versus international) may
have an effect on their TQM practices. However, no
studies were found that examined the effect of this
contingency factor on TQM practices and TQM–
performance relationships. Nonetheless, a somewhat
comparable study conducted by Das et al. (2000) used
international competition as a contingency factor.
Their study compared high involvement work prac-
tices and quality practices across three groups of North
American companies that faced low, medium, and high
levels of competition from Japanese companies, as well
as these practices’ effects on company performance and
customer satisfaction. The study found differences in
high involvement practices and quality practices across
these three groups. It also found differences across the
three groups in terms of the effect of quality practices on
customer satisfaction. However, the effect of customer
satisfaction on company performance was similar across
these groups. Even though the effect of high involvement
work practices on company performance was similar
across low and high competition conditions, this
relationship was nonsignificant for companies facing
medium level competition.
The current study is different from the Das et al.
(2000) study in that it compares companies that have
only domestic customers (domestic operating compa-
nies) to those that have customers worldwide (interna-
tional operating companies). International operating
companies are generally more exposed to new ideas and
practices than domestic operating companies and are
therefore in a better position to learn from the experiences
of similar plants and adopt new management techniques
more rapidly. This learning also comes as a result of the
intense competitive pressures that these companies face
from their foreign competitors to implement these
techniques (Osterman, 1994). For instance, a study
conducted by Gonzalez-Benito and Spring (2000) found
that international companies were more likely to
implement just-in-time purchasing practices. Bayo-
Moriones and Merino-Diaz de Cerio (2003) argued that
companies that belonged to a multinational group gene-
rally positioned their quality departments at a higher level
in the organizational structure, which suggested that the
level of implementation of TQM practices at these
companies was probably greater.
The HRM literature also suggests that companies
that have international presence have superior manage-
ment practices such as employee relations, recruitment,
and the use of innovative human resource practices
compared to domestic operating companies (Chambers
et al., 1998; Holbeche, 1999; Hiltrop, 2002). There are a
number of reasons for the differences in human resource
practices across these companies. For instance, inter-
national companies have to deal with a greater range of
complex issues such as the coordination of interna-
tional training activities, relocation of expatriates, and
I. Sila / Journal of Operations Management 25 (2007) 83–10996
adjustment of pay policies to the regulations of
different countries (Hiltrop, 2002). Data collected
from Chinese and Slovakian domestic and global
companies also showed that companies that had global
presence were more market-oriented in their emphasis
on training and allocated more resources for sales
training (Honeycutt et al., 1999). Since international
operating companies allocate more resources for the
effective implementation of their various TQM
practices, these investments in quality would be
expected to lead to higher levels of performance in
these companies (Das et al., 2000).
Proposition 9. The fit of TQM practices is different
across domestic operating and international operating
companies.
Proposition 10. The structural model relationships are
different across domestic operating and international
operating companies.
4. Methodology
4.1. Measurement instrument
The initial measurement instrument was created
using an extensive review of the literature. Most of the
items were adopted from the measurement instruments
of previous TQM studies such as Saraph et al. (1989),
Flynn et al. (1994) and Samson and Terziovski (1999)
Table 3
A profile of the respondents
Industries (SIC codes) Chemicals a
Fabricated m
Industrial an
Electronic a
Transportati
Measure, an
Wholesale t
Wholesale t
Business se
Engineering
Job titles Vice preside
manager: 8,
Site’s sales (in millions of dollars) 0–1: 5, 2–1
101–500: 50
Unspecified
Number of employees at the site 0–20: 17, 2
1001–2500:
Number of hours of continuous
improvement-related training received
by an average employee
0–10: 173,
Over 50: 4,
and supplemented by the general quality management
literature. Some items that were not covered sufficiently
in the literature were also added using the 2002
MBNQA criteria (NIST, 2002). A similar practice was
also used by Black and Porter (1996) who supplemented
the 1992 MBNQA items with issues in the TQM
literature that were not adequately covered in the
MBNQA. The measurement instrument was then tested
and refined based on the feedback of several companies’
general managers, quality experts, and Executive MBA
students at a major public university. The final
instrument had 114 items measuring the TQM construct
and 19 items measuring the four performance variables.
A 1–7 Likert scale was used for the items that measured
the TQM construct, where 1 was strongly disagree and 7
was strongly agree. Regarding the performance items,
the respondents were asked to rate the level of their
site’s performance during the past 3 years compared that
of their major industry competitors. A 1–7 Likert scale
was used for these items, where 1 was below average
and 7 was above average.
4.2. Sample
The instrument was administered to 2000 manufac-
turing and service companies (SIC codes 28, 34–38,
50, 51, 73, 87) randomly selected from the American
Society for Quality mailing list. One key informant
from each organization who was deemed to be
nd allied products (28): 18
etal products (34): 86
d commercial machinery and computer equipment (35): 15
nd other electric equipment (36): 75
on equipment (37): 12
alyze and construction industries (38): 14
rade—durable goods (50): 19
rade—non-durable goods (51): 16
rvices (73): 15
, accounting, research management and related services (87): 16
nt: 20, general manager: 5, quality manager: 143, other type of
engineer: 41, coordinator: 14, director: 32, supervisor: 7, others: 16
0: 57, 11–20: 39, 21–50: 50, 51–100: 36
, 501–1000: 16, over 1000: 18
: 15
1–100: 85, 101–500: 102, 501–1000: 49
19, 2501–5000: 7, over 5000: 7
11–20: 45, 21–30: 15, 31–40: 22, 41–50: 4
do not know: 13, unspecified: 10
I. Sila / Journal of Operations Management 25 (2007) 83–109 97
knowledgeable about the issues discussed in the survey
was identified. These informants included the vice
president, general manager, quality manager, engineer,
coordinator, director, and supervisor. Six of the surveys
were returned as undeliverable, and within 1 month of
mailing, 302 completed surveys were returned. After
eliminating those surveys with missing data, 286 usable
surveys remained.
To test for nonresponse bias, the data were split into
two groups, where the surveys received late (90)
represented the nonrespondents and those received
early (196) represented the respondents. Then t-tests
were conducted on the two groups’ mean responses to
ten randomly selected questions (Armstrong and
Overton, 1977), and the results showed that the two
groups were identical. The two groups were also not
significantly different in terms of demographic vari-
ables such as sales, number of employees, unionization
Table 4
Summary of goodness-of-fit statistics for CFA of model constructs
Model constructs and their indicators x2 d.f
TQM 57.58 14
Leadership
Strategic planning
Customer focus
Information and analysis
Human resource management
Process management
Supplier management
Human resource results 8.20 2
Employee turnover
Employee absenteeism
Number of employee suggestions
Employee job performance
Customer results 2.87 2
Customer retention
Reliability and timely delivery of products/services
Personalized service
Value for the money spent
Organizational effectiveness 32.38 9
Cost
Product/service quality
Productivity
Cycle times
Number of errors or defects
Supplier performance
Financial and market results 15.40 5
Market share
Profit
Return on total assets
Overall competitive position
Number of successful new product/service introductions
* This factor loading was significant at p < 0.01. All other factor loading
(Ahire and Dreyfus, 2000), and ISO 9000 registration.
In addition, a multiple group analysis was conducted,
which showed that that the proposed model was
equivalent across respondents and nonrespondents
(Curkovic et al., 2000a). These tests showed that there
was no nonresponse bias in the data. Table 3 provides
a descriptive summary of the respondents.
4.3. Scale reliability and validity
The corresponding items of each of the seven TQM
practices and those of the four performance measures
were parceled to reduce them to a manageable level and
to meet sample size requirements for multiple group
analysis (Hall et al., 1999). A parcel is simply the
average of responses on items corresponding to an
indicator. However, before the items constituting each
TQM practice were parceled, they were screened by
. x2/d.f. p-Value CFI SRMR Factor
loading
Cronbach’s
alpha
4.11 0.0000 0.95 0.035 0.94
0.81 0.78
0.88 0.90
0.88 0.85
0.87 0.88
0.81 0.76
0.83 0.86
0.80 0.77
4.10 0.0646 0.93 0.075 0.72
0.75
0.84
0.29
0.29
1.44 0.2377 1.00 0.018 0.82
0.72
0.75
0.54
0.70
3.60 0.0000 0.92 0.074 0.75
0.31
0.75
0.87
0.69
0.28*
0.62
3.08 0.12 0.93 0.059 0.87
0.75
0.88
0.89
0.80
0.45
s were significant at p < 0.001.
I. Sila / Journal of Operations Management 25 (2007) 83–10998
conducting a confirmatory factor analysis (CFA) for
each TQM practice to determine whether they indeed
measured their assigned practices. All the items had
statistically significant factor loadings on their assigned
TQM practices and were therefore retained in the
model. Then the unidimensionality and reliability of the
scales were analyzed before their convergent validity,
discriminant validity, and criterion-related validity were
assessed (Anderson and Gerbing, 1982). EQS 6.1 for
Windows was used for the following analyses.
4.3.1. Unidimensionality analysis
The unidimensionality of the TQM construct and the
four performance measures was analyzed using CFA. In
the SEM literature, a comparative fit index (CFI) cutoff
value of 0.90 (e.g., Bentler and Bonnet, 1980; Kline,
1998) or ‘‘close to’’ 0.95 (Hu and Bentler, 1999), and a
standardized root mean square residual (SRMR) value
of less than 0.08 (Hu and Bentler, 1998, 1999) have
been recommended for adequate model fit. Table 4
indicates that the CFI values ranged from 0.92 to 1.00,
and the SRMR values ranged from 0.018 to 0.075,
suggesting that all the constructs were unidimensional.
4.3.2. Reliability analysis
The reliability of the constructs was assessed using
Cronbach’s alpha (Cronbach, 1951). Alpha values equal
to or greater than 0.70 indicate high construct reliability
(O’Leary-Kelly and Vokurka, 1998). The alpha values
Table 5
Discriminant validity analysis
Construct scale pairs Unconstrained
x2 d.f.
TQM
Human resource results 295.66 43
Customer results 189.54 43
Organizational effectiveness 277.34 64
Financial and market results 235.38 53
Human resource results
Customer results 146.07 19
Organizational effectiveness 265.77 34
Financial and market results 261.03 26
Customer results
Organizational effectiveness 125.11 34
Financial and market results 155.47 26
Organizational effectiveness
Financial and market results 197.14 43
* p < 0.001.** p < 0.005.
*** p < 0.01.
for the seven TQM practices ranged from 0.76 to 0.90
(see Table 4), yielding an overall reliability of 0.94 for
the TQM construct, and the alpha values for the four
performance measures ranged from 0.72 to 0.87. These
results suggested that all constructs were highly
reliable. In no case would any of these constructs’
reliabilities increase substantially if items were to be
deleted from them.
4.3.3. Convergent validity analysis
Convergent validity is defined as ‘‘the degree to
which two or more attempts to measure the same
concept ... are in agreement’’ (Bagozzi and Phillips,
1982, p. 468). According to Bagozzi et al. (1991), CFA
can be used to assess convergent validity. The authors
suggested that if all the factor loadings of indicators on
their constructs were significant, convergent validity
was attained. Table 4 shows that the factor loadings
ranged from 0.28 to 0.89 and were all statistically
significant, indicating strong convergent validity.
4.3.4. Discriminant validity analysis
Discriminant validity measures the degree to which
a construct and its indicators are different from
another construct and its indicators. Discriminant
validity can be assessed by conducting a series of x2
difference tests between nested CFA models for all
pairs of constructs. CFA is run on each pair of
constructs, where the two constructs are allowed to
Constrained Dx2
x2 d.f.
315.91 44 20.25*
201.52 44 11.98*
333.39 65 56.05*
293.82 54 58.44*
155.24 20 9.17**
313.63 35 47.86*
309.91 27 48.88*
193.99 35 68.89*
179.55 27 24.09*
204.77 44 7.63***
I. Sila / Journal of Operations Management 25 (2007) 83–109 99
correlate freely (called the unconstrained model). The
x2 obtained from this model is subtracted from the x2
obtained from another CFA run, where the correlation
between the two constructs is constrained to 1 (the
constrained model) (Bagozzi et al., 1991). Table 5 lists
the x2 for the constrained and unconstrained models.
The table shows that the x2 difference tests between
all pairs of constructs are significant, suggesting
strong discriminant validity (Bagozzi et al., 1991).
4.3.5. Criterion-related validity analysis
Criterion-related validity evaluates the extent to
which items in a construct scale are correlated with an
external criterion (Nunnally, 1978). In this study, the
TQM construct is the predictor and the four perfor-
mance measures are the relevant criteria. The bivariate
correlations between TQM and human resource results,
customer results, organizational effectiveness, and
financial and market results were 0.49, 0.61, 0.60,
and 0.50, respectively. These correlations were statis-
tically significant at p < 0.001, indicating strong
criterion-related validity.
Based on the above analyses, the reliability and
validity of all scales were established. In addition, the
assumptions of multivariate analysis including normal-
ity, linearity, multicollinearity, and singularity were
tested for the variables used in the proposed model. The
results showed that there were no statistically significant
violations of these assumptions.
Table 6
Goodness-of-fit indices for structural path model analyses using the full sa
Contextual factor Subgroup n x2 d
All data 286 139.90 3
TQM implementation TQM 151 83.81 3
Non-TQM 135 112.27 3
ISO registration ISO 165 104.22 3
Non-ISO 121 79.44 3
Country of originb US 183 91.18 3
Non-US 101 81.07 3
Company size Small (<100 employees) 102 82.07 3
Medium (101–500 employees) 102 86.38 3
Large (>500 employees) 82 55.05 3
Scope of operationsb International operating 190 100.45 3
Domestic operating 94 67.64 3
a The number of free parameters to be estimated was 27.b The sum of the sample sizes for subgroups within these contextual factor
one or more demographic questions and were thus excluded from the analc The computed power for these subgroups was equal to or greater than 0
subgroups, power was greater than 0.80 at a = 0.05 and RMSEA null hypoth
model fit as suggested by Browne and Cudeck (1993) and MacCallum et a
5. Results
5.1. Structural path model analyses for the full
sample and subgroup samples
Before testing the proposed model in Fig. 1 using the
full sample and each of the subgroup samples, two of
the recommended approaches in the SEM literature
were used to test whether sample size requirements
were met. These included the number of cases (n) per
free parameter (t) (i.e., the n:t ratio) rule and power
analysis. When the number of cases per free parameter
rule is used, Bentler (1989) recommends a 5:1 ratio as
an ‘‘over-simplified guideline’’, and Bollen (1989)
argues that using ‘‘at least several cases per free
parameter’’ would be a useful suggestion since there is
‘‘no hard and fast rule’’ (Marsh et al., 1998). Table 6
shows that there are indeed several cases for each of the
27 free parameters estimated in the model. The ratios
ranged from 3.04 to 10.59, and most of them were either
close to or greater than 5. In addition, power analysis
was conducted for each of the structural path models
shown in Table 6 using the framework presented by
MacCallum et al. (1996). First, a test of not-close fit was
carried out for each model. The root-mean square error
of approximation (RMSEA), a measure of model
residuals, is used in conducting this test. Since the upper
bound of the RMSEA confidence interval for all of the
models was below 0.10, the hypothesis of not-close
mple and subgroup samples
.f. x2/d.f. p-Value CFI SRMR RMSEA n:t ratioa Power
9 3.59 0.00000 0.95 0.031 0.039 10.59 1.00
9 2.15 0.00004 0.95 0.038 0.040 5.59 0.97
9 2.88 0.00000 0.92 0.047 0.050 5.00 0.87
9 2.67 0.00000 0.95 0.031 0.043 6.11 0.97
9 2.04 0.00014 0.94 0.047 0.049 4.48 0.83
9 2.34 0.00000 0.95 0.035 0.039 6.78 0.99
9 2.08 0.00009 0.92 0.044 0.041 3.74 0.81
9 2.10 0.00007 0.93 0.049 0.041 3.78 0.82
9 2.21 0.00002 0.95 0.037 0.040 3.78 0.83
9 1.41 0.04569 0.96 0.036 0.042 3.04 0.80c
9 2.58 0.00000 0.95 0.035 0.043 7.04 0.99
9 1.73 0.00300 0.92 0.042 0.047 3.48 0.83c
s did not add up to 286 since some of the respondents did not respond to
ysis.
.80 at a = 0.10 and RMSEA null hypothesis value = 0.10. For all other
esis value = 0.10 (values above 0.10 for RMSEA would indicate a poor
l. (1996)).
I. Sila / Journal of Operations Management 25 (2007) 83–109100
fit could be rejected (MacCallum et al., 1996). Thus, it
could be inferred that none of the models had a poor
fit. The power value for the test of not-close fit for
each model was computed using the SAS program
created by MacCallum et al. (1996) and has been listed
in Table 6. Since all the values were equal to or greater
than 0.80 (MacCallum et al., 1996), all models had
adequate power.
Furthermore, to minimize the effect of sample size
in assessing model adequacy, CFI and SRMR were
used to assess model fit in addition to the x2 signi-
ficance test, because CFI and SRMR are relatively
unaffected by sample size (Hu and Bentler, 1998).
Table 6 shows that the CFI values for subgroups
ranged from 0.92 to 0.96, and the SRMR values ranged
from 0.031 to 0.049, indicating adequate model fits.
To save space, parameter estimates including the factor
loadings of TQM practices on the TQM construct, path
coefficients for the structural paths, and the amount
of explained variance (R2 values) for the dependent
variables are shown only for the full sample in Fig. 1.
All the hypotheses except H4 and H5 were statistically
significant at p < 0.001. The R2 values for the four
performance measures (23.7%, 47.5%, 40.5% 43.2%)
were either greater than or comparable to those
reported by other quality management studies (e.g., see
Flynn et al. (1995) and Pannirselvam and Ferguson
(2001)).
5.2. Multiple group analyses to test the propositions
In Section 5.1, the testing of the proposed model
involved the use of single samples. When the researcher’s
goal is to determine whether the components of the
measurement model and the structural model are inva-
riant across multiple samples, multiple group analysis is
used. Multiple group analysis is needed for direct
comparisons of particular model parameters across sub-
groups. In multiple group analysis, the sets of parameters
analyzed to determine subgroup invariance depend on
Table 7
Goodness-of-fit indices for multiple group analyses
Contextual factor x2 d.f. x2/d.f. p-Value
TQM implementation 232.41 93 2.50 0.00000
ISO registration 226.31 93 2.43 0.00000
Country of origin 188.81 93 2.03 0.00000
Company size 279.89 147 1.90 0.00000
Scope of operations 171.04 93 1.84 0.00000
a The number of free parameters to be estimated for the multiple group anal
the other four analyses was 38.b a = 0.05 and the null hypothesis value for RMSEA = 0.10 for all powe
the model and hypotheses to be tested and typically
include factor loadings, structural paths, factor variances/
covariances, factor residuals, and error variances/
covariances (Byrne, 1994). In the current analysis, factor
loadings, and structural paths were of interest based on
the proposed model and hypotheses and therefore
equality constraints were imposed only on these
parameters. EQS estimates these parameters simulta-
neously to get ‘‘efficient estimates’’. Since EQS tests
equality constraints multivariately rather than univari-
ately based on the Lagrange multiplier (LM) test, there is
no need to compare a series of restrictive versus
nonrestrictive models to detect where noninvariance lies
in the model. As a result, it is not required to test for the
measurement model’s equality first before testing the
structural model (Byrne, 1994).
Invariance testing for the subgroups of each
contextual factor was conducted separately. EQS was
run for the subgroups of each contextual factor by setting
the parameters for factor loadings and structural paths
equal across subgroups. The EQS output provides a
LM x2 associated with each constraint. The probability
value for each LM x2 can be checked to find out whether
any of the tests are statistically significant. A probability
value greater than 0.05 indicates that the hypothesized
equality of factor loadings and structural paths holds
(Byrne, 1994).
The results are shown in Tables 7 and 8. Table 7
indicates that the n:t ratios (ranging from 4.40 to 7.53)
and power values (ranging from 0.96 to 0.99) were high,
suggesting that sample size requirements were met. It
also shows that the CFI values ranged from 0.93 to 0.95,
and the SRMR values ranged from 0.040 to 0.055,
suggesting adequate model fits. The results of factor
loading invariance tests were used to determine whether
the seven TQM practices were invariant across
subgroups (addressing the odd-numbered propositions).
These results showed that the probability value
associated with each LM x2 exceeded 0.05, indicating
that all of the seven practices were invariant across the
CFI SRMR RMSEA n n:t ratioa Powerb
0.93 0.044 0.055 286 7.53 0.99
0.94 0.054 0.060 286 7.53 0.98
0.94 0.055 0.063 284 7.47 0.96
0.94 0.051 0.050 286 4.40 0.99
0.95 0.040 0.061 284 7.47 0.97
ysis of the three subgroups of company size was 65 and that for each of
r analyses.
I. Sila / Journal of Operations Management 25 (2007) 83–109 101
Tab
le8
Invar
ian
cean
aly
sis
of
stru
ctu
ral
mo
del
rela
tio
nsh
ips
acro
sssu
bg
rou
ps
of
each
con
tex
tual
fact
or
Hy
po
thes
isE
ffec
to
fE
ffec
to
nT
QM
imp
lem
enta
tio
n
(TQ
Man
dn
on
-TQ
M)
ISO
reg
istr
atio
n
(IS
Oan
dn
on
-IS
O)
Cou
ntr
yo
fo
rig
in
(US
and
no
n-U
S)
Com
pan
ysi
ze
(sm
all
(1),
med
ium
(2),
and
larg
e(3
))
Sco
pe
of
op
erat
ion
s
(in
tern
atio
nal
and
do
mes
tic
op
erat
ing
)
H1
TQ
MH
Rre
sult
sIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
t
H2
TQ
MC
ust
om
erre
sult
sIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
t
H3
TQ
MO
rgan
izat
ional
effe
ctiv
enes
sIn
var
iant
Invar
iant
Invar
iant
Invar
iant
Nonin
var
iant
H4
TQ
MF
inan
cial
and
mar
ket
resu
lts
Invar
ian
tIn
var
ian
t*In
var
ian
t*(1
)an
d(3
)in
var
ian
t.
(2)
no
nin
var
ian
tw
ith
(1)
and
(3)
Invar
ian
t
H5
HR
resu
lts
Cu
sto
mer
resu
lts
Invar
ian
t*In
var
ian
t*N
on
invar
ian
t*In
var
ian
t*In
var
ian
t*
H6
HR
resu
lts
Org
aniz
atio
nal
effe
ctiv
enes
sIn
var
iant
Invar
iant
Invar
iant
Invar
iant
Invar
iant
H7
Org
aniz
atio
nal
effe
ctiv
enes
sC
ust
om
erre
sult
sIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
t
H8
Org
aniz
atio
nal
effe
ctiv
enes
sF
inan
cial
and
mar
ket
resu
lts
Invar
ian
tIn
var
ian
tN
on
invar
ian
tIn
var
ian
tIn
var
ian
t
H9
Cu
stom
erre
sult
sF
inan
cial
and
mar
ket
resu
lts
Invar
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
tIn
var
ian
t
*H
yp
oth
esis
isn
on
sig
nifi
can
t.
subgroups of each contextual factor. Table 8 shows
the results of structural path invariance tests that were
used to evaluate whether the structural model relation-
ships were invariant across subgroups (addressing the
even-numbered propositions). These results provided
support for the invariance of most of the constrained
model parameters across subgroups within each
institutional and contingency factor. As can be seen
from Table 8, all the structural paths were invariant
across the subgroups of both TQM implementation and
ISO registration. The country of origin factor had two
noninvariant paths (although one of the paths was
nonsignificant); company size and scope of operations
each had one noninvariant path.
5.3. Summary of results
The results of structural path model analyses using
each sample showed that the data had a good fit to the
proposed model and thus provided support for the
system of relationships among TQM and business
performance measures. The seven TQM practices and
all the hypotheses except H4 and H5 were statistically
significant. TQM had a significant direct effect on all
measures except financial and market results. However,
TQM did have a significant indirect effect on financial
and market results through the mediating effects of the
other three measures.
The multiple group analyses results showed that there
were not many statistically significant differences across
the subgroups of each institutional and contingency
factor. This provided more support for the universal
applicability of the TQM practices and their effects on
performance rather than the context-dependent argu-
ment. This support was valid at least for the contextual
factors analyzed in this study. Propositions 1–4 were not
supported in that all the TQM practices and structural
model relationships were similar across TQM and non-
TQM companies, as well as across ISO-registered and
non-ISO-registered companies.
The study’s results largely supported Propositions 5
and 6 indicating that US and non-US companies did not
have statistically significant differences except H5 and
H8. In partial support of Proposition 7, all the TQM
practices were found to be similar across small and
medium-sized companies. However, contrary to this
proposition, these practices were also found to be similar
across SMCs and large companies. Proposition 8 was
partly supported, because all the structural model
relationships except the effect of TQM on financial
and market results were similar across small and
medium-sized companies. However, since most of these
I. Sila / Journal of Operations Management 25 (2007) 83–109102
relationships were also similar across SMCs and large
companies, this proposition was partly not supported.
Overall, the results showed that large companies and
SMCs were similar in terms of the fit of their TQM
practices and the structural model relationships. Finally,
the fit of all the TQM practices was similar across
domestic and international operating companies, which
did not provide support for Proposition 9. Only H3 was
different across these companies, providing minimal
support for Proposition 10.
6. Discussion and study implications
The synergies among TQM and performance
measures in the tested model provide support for
Deming’s (1982) quality chain reaction theory, which
states that focus on quality will lead to outcomes such
as employee and customer satisfaction, efficiency, and
profitability. One of the contributions of this study is
that it uses institutional and contingency factors as
moderator variables providing extensions to this theory
and empirically tests the effects of these variables on
TQM–performance relationships using a model. Over-
all, the results suggest that the holistic implementation
of the seven TQM practices contributes to improved
performance similarly across subgroups of companies
within each institutional and contingency factor.
6.1. Managerial implications
By implementing these practices effectively,
managers can expect to realize improvements in all
of the four performance areas. However, improve-
ments in human resource results, customer results, and
organizational effectiveness would be more immedi-
ate than those in financial and market results. This
finding supports the argument that a long-term view
should be taken in implementing TQM and that TQM
initiatives should not be terminated if there are no
significant improvements in the bottom line in the
short-term. Managers can use the items constituting
TQM in this study to assess where their companies
stand with regard to the use of these TQM practices or
as a guideline in implementing them. In addition, they
can use the items constituting the four performance
measures as an audit tool to evaluate the results of
their TQM initiatives over time.
The similar model relationships between TQM
companies and non-TQM companies show that for a
company to be a TQM company, it does not have to
formally implement TQM. This result agrees with the
findings of Ahire et al. (1996a). There was also no
difference between ISO-registered companies and non-
ISO-registered companies. These results could be
explained by the fact that a large number of companies
responding to the survey had a number of other quality
initiatives such as kaizen, lean manufacturing, con-
straint management, Juran training, as well as other
quality initiatives with no formal name. Therefore, the
important question is how effectively these companies
are implementing the various components of TQM in
the absence of a TQM program. This finding has
managerial implications in that companies need to
decide whether significant resources and effort should
be allocated to the implementation of a TQM program
to achieve desired performance outcomes. Companies
that already have other quality initiatives in place have
to determine whether they will reap extra benefits by
implementing a separate TQM program. The results
suggest that similar performance outcomes can be
achieved by either undertaking other quality initiatives
or simply establishing organizational systems that
incorporate these TQM practices. Those companies
that already have quality initiatives other than TQM can
use the practices constituting TQM in this study as an
assessment tool to determine whether additional
practices could be incorporated into their existing
programs to cover the range of principles supported by
TQM. Such an assessment could significantly reduce
investment that would be required for a full-blown
TQM program. Thus, companies should align their
various quality initiatives to reduce spending, effort,
and duplication.
This study provides support for the convergence
hypothesis and indicates that the TQM practices of US
and non-US companies operating in the US are similar.
This finding should be useful to the managers of these
companies in planning and implementing the appro-
priate TQM practices. However, as suggested by the few
noninvariant structural model relationships across these
companies, they should expect to see different results in
some of the performance areas.
As far as the contingency propositions are con-
cerned, the results show that the fit of the TQM practices
and most of the structural model relationships produced
by this fit are similar across the subgroups of each
contingency factor. These results suggest that tailoring
that may be needed to implement TQM practices under
these contingencies is minimal. Although TQM
practices were first implemented in large companies,
this study shows that SMCs have come a long way in
employing the same practices and that they can benefit
similarly from the same concepts. Therefore, both large
companies and SMCs that already have these practices
I. Sila / Journal of Operations Management 25 (2007) 83–109 103
in place would be a good benchmark for later
implementers. These findings support those of Ahire
and Golhar (1996) who reported that small companies
could implement TQM practices as effectively as large
companies and obtain high product quality.
Similarly, the fit of TQM practices and the structural
model relationships are similar across domestic and
international operating companies. This suggests that
domestic operating companies have developed com-
parable TQM practices. Even though learning and
adoption of new management techniques in interna-
tional companies may be faster, the fact that the TQM
philosophy has been in practice for a long time may
have narrowed the TQM knowledge gap between the
two subgroups.
6.2. Research implications
The results have implications for the applicability of
institutional theory and contingency theory to the
analyzed contexts. These results indicate that, to a great
extent, US and non-US companies are similar, which
provides support for the argument that institutional
theory is effectual in explaining the convergence of their
practices. However, as mentioned above, a few
structural model relationships were different across
these companies, suggesting different results in some of
the performance areas. Future studies should attempt to
identify the potential factors that may produce such
differences. The model used in this study can also be
tested by conducting cross-country studies. Such studies
would shed more light on whether the convergence
hypothesis also holds for the TQM practices and TQM–
performance relationships of companies operating across
different country boundaries.
The premise of the first two institutional propositions
was that TQM implementation and ISO registration
would distinguish companies from other companies in
terms of their TQM practices and the structural model
relationships. However, the fact that this premise has
not been supported suggests that the mimicry or
conformance involved in the implementation of TQM
practices transcends beyond TQM and ISO 9000
initiatives and should be explained by a more complex
set of regulations, procedures, and structures imposed
on companies by environmental institutions. Therefore,
future studies should incorporate other potential factors
as control variables into the analysis. Conducting case
studies would especially be useful in gathering the
extent of data needed for such an analysis.
In addition, the finding that the subgroups within the
two contingency factors, size and scope of operations,
do not have many differences indicates that these factors
are not significant for the implementation of TQM
practices. However, the fact that one structural relation-
ship for each of the two factors is noninvariant suggests
that not all the performance results can be expected to
be similar across subgroup companies within each
contingency factor. Therefore, companies should be
aware that some of the desired outcomes of TQM may
not be realized due to lack of fit and that a more
appropriate fit should be established based on compa-
nies’ unique characteristics. Overall, the results suggest
that the nature of TQM practices in companies with
different sizes and scopes of operations is not dictated
by their unique environments or characteristics as
suggested by contingency theory but rather by institu-
tional factors as suggested by institutional theory that
force them to imitate or conform. However, the analysis
does not show whether these different groups of
companies are achieving their potential performance
levels by adopting the same TQM practices. It could be
possible to attain higher levels of performance by
establishing practices with a more optimal fit. However,
this may be a difficult task since the pressure exerted by
institutional factors to conform and thus apply TQM
practices universally may deter companies from such
an undertaking.
6.3. Research limitations
This study also has some limitations. First, it relies
on the perceptions of the respondents to operationalize
the survey instrument. Although the survey participants
were asked to report their actual and not desired
responses, some of them may not have done so. This
may have introduced bias into the data, which could
bring up potential concerns regarding generalizability,
reliability, and validity. Therefore, it is important that
construct reliability and validity analyses be conducted
to see if such concerns are warranted. However,
although all the constructs were found to be reliable
and valid, the presence of bias in data might not be
completely ruled out.
In addition, the data on performance measures were
based on the respondents’ perceptions and not on hard
data. Objective measures of performance such as actual
financial performance could provide a better test of the
proposed hypotheses. Furthermore, the independent and
dependent constructs were measured using the same
survey instrument, which may have resulted in common
method variance and potential common method bias.
That is, the use of a single method results in the
confounding of method variance with trait variance,
I. Sila / Journal of Operations Management 25 (2007) 83–109104
which may bias the estimates of relationships among the
model constructs. However, this could be overcome
using multiple methods, which make it possible to
partition the observed variation between construct and
methods variance so that the correlations among the
constructs are not confounded. As a result, the accuracy
of population parameter estimates could be improved
(Doty and Glick, 1998). Thus, multiple methods should
be used in collecting data in future studies to make a
stronger case for the generalizability of findings.
Another potential limitation is the bias that may be
introduced into the data by the use of single informants.
Although the use of single informants is widespread in
operations management research, using multiple
informants produces better quality data (Hogarth,
1978; Hill, 1982) since it ‘‘reduces the correlation
between systematic error components, averages out
random error in individual responses, provides the
opportunity to analyze the impact of error sources, and
provides a method to correct for systematic error in
informants’ responses’’ (Bruggen et al., 2002, p. 471).
However, to alleviate the potential problems associated
with using single informants, accepted methodological
guidelines were followed. For instance, the measure-
ment scales and the survey instrument were created and
pre-tested to maximize the validity of the data to be
collected and the appropriate key informants were
identified by name and job title before the surveys were
sent out (Huber and Power, 1985).
Finally, this study does not establish causality
between the model variables, because it uses cross-
sectional data. One of the basic requirements of
establishing causality is temporal ordering (i.e., a cause
must be shown to unambiguously precede an effect),
which necessitates the use of longitudinal data (Bullock
et al., 1994).
7. Conclusions
Empirical evidence in this study suggests that a
context-dependent argument for TQM and its effects on
key organizational performance measures is not
warranted for the contextual factors analyzed. However,
findings suggest that although the same TQM practices
will mostly yield similar performance results across
subgroups of companies within each contextual factor,
some of these results can be different. Reasons for such
differences should be explored in future studies. The
model developed and tested in this study should also be
replicated using other contextual factors to make
stronger assertions about the effects of institutional
and contingency factors. This study’s findings on the
effects of company size are similar to the findings of
Benson et al. (1991) and Ahire and Golhar (1996) who
also reported that this contextual factor was insignif-
icant in explaining variation in TQM practices.
However, since the contextual factors and research
designs used were different across these studies,
replication studies should be conducted to shed more
light on the effects of contextual factors. In addition,
future research should examine theoretically plausible
moderating effects. For example, the relationship
between company size and TQM practices may be
moderated by unit level strategy.
Overall, this study contributes to the discussion in
the literature over whether a universal or a context-
dependent approach to TQM is needed by drawing on
institutional theory and contingency theory. So far, these
discussions have been scant and mainly prescriptive. The
use of organizational theory in this context has been
especially rare. This empirical study will hopefully lay
the groundwork for more such studies.
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