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Copyright UCT
Consumers and Their Perception of Private Labels in Turkey:
A study across categories
A Research Report
The Graduate School of Business
University of Cape Town
In partial fulfillment of the requirements for the
Masters of Business Administration Degree
by
Selen Karan
10 December 2010
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PRIVATE LABELS IN TURKEY
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Table of Contents
Plagiarism Declaration ......................................................................................................................................... 3
Private Labels in Turkey...................................................................................................................................... 4
Research Area and Problem ............................................................................................................................ 4
Customer Perception of Private Label Brands .............................................................................................. 5
Research Questions and Corresponding Hypotheses .................................................................................... 7
Research Assumptions.................................................................................................................................... 10
Research Ethics ............................................................................................................................................... 11
Literature Review ............................................................................................................................................... 11
Consumer Behavior Across Categories ........................................................................................................ 13
Personal Factors ......................................................................................................................................... 13
Product Factors .......................................................................................................................................... 14
Situational Factors ..................................................................................................................................... 14
Perceived Risk Factors ............................................................................................................................... 14
Conclusion ...................................................................................................................................................... 15
Research Methodology ....................................................................................................................................... 16
Research Approach and Strategy ................................................................................................................. 16
Research Design, Data Collection and Research Instruments ................................................................... 16
Sampling ......................................................................................................................................................... 19
Data Analysis Methods .................................................................................................................................. 20
Research Findings, Analysis, and Discussion ................................................................................................... 21
Research Findings ........................................................................................................................................... 21
Demographics ............................................................................................................................................. 21
Cross-category findings ............................................................................................................................. 23
Research Analysis and Discussion ................................................................................................................ 24
Correlation Analysis .................................................................................................................................. 27
Hypothesis Testing ......................................................................................................................................... 29
Research Limitations ..................................................................................................................................... 32
Research Conclusions ......................................................................................................................................... 33
Manegerial Implications ................................................................................................................................ 35
Future Research Directions ............................................................................................................................... 35
References ........................................................................................................................................................... 37
Appendix: Scale of Research ............................................................................................................................. 41
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Plagiarism Declaration
1. I know that plagiarism is wrong. Plagiarism is to use another’s work and pretend that it is
one’s own.
2. I have used a recognized convention for citation and referencing. Each significant
contribution and quotation from the works of other people has been attributed, cited and
referenced.
3. This report is my own work.
4. I have not allowed, and will not allow anyone to copy my work with the intention of
passing it off as his or her own work.
5. I acknowledge that copying someone else’s assignment or essay, or part of it, is wrong,
and declare that this is my own work.
Signature
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Private Labels in Turkey
Research Area and Problem
When a retailer sells a product with a brand name that the retailer owns, the product is
called a private label product (PL) and the brand is called a private label brand (PLB, also
called “house brands” and “store brands”). American food retailers Kroger and A&P sold the
first PLs a century ago, but worldwide development of PLBs is more recent. In 1976,
Carrefour, the French hypermarket chain, pioneered PLBs in Europe with such success that
PLBs contributed 3.5% of company’s sales turnover by the end of the first year. American
and UK (1978) and German (1978) retailers quickly followed. Rapid worldwide expansion
of PLBs continues today.
PLB consumer packaged goods (CPGs, called fast-moving consumer goods) have been
among the fastest growing product categories for PLBs. CPGs are especially appealing to
retailers because profitability is higher than on national brands, which are promoted by other
retailers and thus subject to price competition. Although penetration varies across countries,
it is now common to see major supermarkets, hypermarkets, drug stores and discounters
offering successful PLBs in many product categories, including fresh, canned, frozen, and
dry foods; snacks, ethnic specialties, pet foods, health and beauty, over-the-counter drugs,
cosmetics, household and laundry products, DIY, lawn and garden, paints, hardware, and
auto aftercare (Herstein & Gamliel, 2006).
According to a recent report from the Private Label Manufacturer’s Association in
2010, “PL gained market share in 14 of the 20 countries tracked by Nielsen and currently
represents at least one of every five products in all but two of the countries” (Private Label
Manufacturers Association, 2010). The report also indicates that PLBs obtained record
market shares across Europe last year. For the first time PLBs account for at least 40% of all
CPGs sold in a total of five countries in Europe. Although the major gains were observed in
the western markets such as France, Germany, Spain, The Netherlands and Belgium, the
growth was strongest in emerging retail markets such as Poland, Hungary, Slovakia and
Turkey. PL share per country can be seen in Figure 1 below. Furthermore, one in every five
items sold in the U.S. supermarkets, mass merchandisers, and drug stores is a private label
product and total PL sales was more than 81billion US Dollars, which accounted for a unit
share of 22.8% (AC Nielsen, 2008). There are around three thousand PLB producers in the
United States and more than half of the branded CPG manufacturers also produce PLBs,
which illustrates that the PLB industry not only offered a market for retailers, but for the
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manufacturers as well.
Figure 1. Private label share of fast-moving consumer good sales in Europe.
Faced with an ever-increasing consumer interest and growth in sales, many retailers
have begun introducing private label as a strategy for creating competitive advantage,
especially in the recent economic downturn (Walsh & Mitchell, 2010). Retailers have
illustrated ambition in expanding their share of PLB sales for several reasons. Among the
most important of these are higher margins, lessened dependency on manufacturers,
improvements in store image and higher consumer store loyalty (Ailawadi & Harlam 2004;
Narasimhan & Wilcox, 1998; Pauwels & Srinivasan, 2004). However, convincing
consumers to shift from their preferred national brand (NB) to private label is still a
challenge. Therefore, it is crucial for retailers, who aim to gain higher customer store loyalty
through PLB products, to have a good understanding of the consumer perception of PLB and
the reasons behind their intention to buy these products (Walsh & Mitchell).
Customer Perception of Private Label Brands
PLBs were originally introduced as a more affordable alternative to national brands. It
is evident that the economic downturns in history, including the recent recession, played
determining roles in changing consumer behavior and causing a major shift in preference
from NBs to PLBs (Corstjens & Lal, 2000; Deloitte Debates, 2010). In Turkey where the
PLBs are on average 30% less expensive compared to NBs, PL sales showed a 50% increase
during the recession in 2001 (“Private Label”, 2008). Although many perceived this change
to be a temporary trend and expected consumers to go back to their usual purchasing habits,
they were proven wrong. It can be seen that PL sales have grown faster than NB sales and
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have gained higher levels of penetration in comparison to figures during recession (Corstjens
& Lal, 2000).
Prior research has found that consumers prefer NBs and are willing to pay more for
them (Walsh & Mitchell, 2010). This has often been the case because PLBs are thought as
having lower quality or social status. However, evidence suggests that this is changing.
According to a recent Deloitte study, more than 90 of 100 people say they have permanently
changed their buying behavior during the recent recession as they found little or no difference
between PLB and NB (Deloitte Debates, 2010). Similarly, AC Nielsen (2005) consumer
survey conducted in 38 European countries supports that many consumers believe PLB to be
a good alternative to NB products and they are willing to spend more on PLB. As the PLB
market matured, more retailers began to offer premium PL products that compete directly
with the NBs in terms of quality and image. The similar packaging, promotion and
increasing number of retailers running TV advertisements make it harder for consumers to
differentiate PLB products from the NB (Putsis & Dhar, 2001).
According to Narasimhan and Wilcox (1998, p. 574) consumers’ intention to switch
from a national brand to a private label is linked to “the risks consumers associate with
making purchases in a given category, as well as measures describing the ability of a retailer
to offer a private label of a comparable quality to the national brands in a given category”. It
has been found that the level of perceived risk, and therefore the attitude toward PLB vary
across product categories (e.g., Batra & Sinha, 2000, Hoch & Banerji, 1993; Narasimhan &
Wilcox, 1998). Aluminum foils, paper products and plastic bags were among the first product
categories in which Turkish major supermarkets and hypermarkets began competing with
PLBs. By 2006, competition was common in paper products, liquid oil, dry pulses, and food
categories, with sales attributable to PLBs growing by 22% on the back of only 4-5% price
inflation (Market Brands Report, 2006, as cited in Private Label Turkey). The turnover
drivers in 2006 were paper products, pulses and beverages. According to Dhar and Hoch
(1997), the main reason for PLB share to vary across retailers is the differences among
product categories.
Previous research on PLB mainly looked at the issue from manufacturer and retailer
perspectives. Researchers have mostly investigated the success of PLB over NB, examining
the promotional activities, financial factors, size and margin variations between categories
and necessary technological investments (Hoch & Banerji, 1993). Belizzi, Hamilton,
Krueckeberg, and Martin (1981) showed that NB buyers, who are more prone to preferring
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name brands, tend to be more influenced by advertising as opposed to PLB buyers. The
authors argue NBs to be more successful in terms of marketing practices, heavy advertising,
and packaging, which in the end determine the perceptual differences. Supporting this
argument, Hoch and Banerji found PLBs to have higher margins in categories where their NB
competitors do not spend much on advertising.
Research has been limited on the roles of consumer attitudes and perceptual differences
in determining the success of PLB, especially across product categories. Some studies
examined the role of consumer-level factors in PLB purchasing behavior, but have not
considered cross-category differences (Richardson, Jain & Dick, 1996). Batra and Sinha
(2000), on the other hand, looked at the determinants of the level of perceived risk and how
the perceived risk changes across product categories. They, however, have not looked at the
demographics of PLB consumers.
There is no previous research examined the consumer-level perceptional differences in
PL, across the product categories, in Turkey. In light of the antecedents from existing
research (Batra & Sinha, 2000; Walsh & Mitchell, 2010), this study examined the effect of
four determining factors of perceived risk on consumers’ intention to buy PLBs, across nine
product categories. It is believed that understanding the reasons for causing these cross-
category differences might act as a guide for retailers to increase their PL shares and for NB
manufacturers to develop a more targeted strategy in their fight against the PLB.
Research Questions and Corresponding Hypotheses
Low-income consumers in Turkey commonly prefer discount markets like BIM,
Tansas, SOK, and DiaSA. These markets offer discounts on national brands and also sell
their own private labeled products. However, today PL products are also common in
supermarkets like Migros, Carrefour, and Macro whose target consumer range from middle
to upper income levels. As mentioned earlier, execution of private label brands is no longer a
strategy used to attract and satisfy only low-income consumers. PLB proneness changes
across income levels and product categories. Retailers need to have an insight on the PLB
behaviors of their target consumer in order to succeed.
In general terms, this research tried to understand how middle and upper middle-class
Turkish consumers differ in their approach to PLB. Thus, the main question was if the
selected factors that determined the perceived risks attached to different product categories
explain consumers’ proneness to buy PLBs. Furthermore, the study will also examine to see
if there is any relationship between certain demographic factors, such as income, age and
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gender and one’s propensity to purchase PLB.
Previous research predicted a negative correlation between the perceived risk, and the
purchase of PLB. That is to say, consumers buy PLBs if the perceived risk level is low or in
other words, they will buy NBs if the perceived risk level is high. According to Narasimhan
and Wilcox (1998), consumer’s willingness to choose NB over PLB is linked to the perceived
risk associated with making the purchase in a certain category. Therefore, it is crucial to
understand the factors determining the level of perceived risk in a given category. The four
determinants included in this research were, consumer’s price consciousness in that category,
fear of choosing the wrong brand, the degree of variation in quality across brands, and the
search / experience nature of the product (Taken from Batra & Sinha, 2000).
It is evident that some consumers judge the quality of a product on the basis of price,
rather than its features (Newman & Becknell, 1970). Price conscious consumers are
generally perceived to be low-income people, who are more prone to buying PLBs and more
likely to follow the deals. These consumers do not necessarily associate price with the
quality of the product. Although, the trend is changing and low price does not always equate
to low quality, it is still valid that, the low-income consumers are more price-sensitive, and
therefore, have more positive attitude toward PLBs.
Research Question 1
Does price consciousness affect consumers’ intention to buy PLBs (IBPLB)?
Hypothesis 1
Ho: Price conscious does not determine consumers’ IBPLB.
Ha: Price conscious determines consumers’ IBPLB.
A personal factor, self-perception or in other terms, self-image affects consumer
purchase intention (Blackwell, Miniard, & Engel, 2006). Some customers may choose to
shop at certain stores, as they want to be associated with who they perceive is the store’s
clientele or they may avoid certain brands because of the social status or biases associated
with the buyers of those brands (Blackwell, Miniard, & Engel). Consumers with high degree
of self-perception might be more likely to purchase NB products with high brand reputation
rather than PLB. For example, when the PLB were first introduced in the market, consumers
bought PLB products for their own personal consumption, but avoided being seen buying or
using the product when interacting with others (Sheath & McGoldrick, 1981). Although, this
attitude is seen to have changed, as the quality and brand reputation attached to PLB has
increased over the years, social risk attached to PLB is still an important determining factor
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of the attitude toward the product (Zielke & Dobbelstein, 2007; Walsh & Mitchell, 2010). As
a matter of course, the consumers’ purchasing behavior of PLB shows differences across
categories, as the perceived social risk of PLB changes in between the product categories.
Products like butter, soap or aluminum foil may have low social risks while toilet paper,
coffee and shampoo have higher social risks attached to them.
In addition to social risk factors related to the self-perception, profile risk associated
with a certain PL product category also defines the consumers’ final decision. This perceived
risk is related to consumers’ uncertainty about the product experience (Blackwell, Miniard, &
Engel, 2006). These risks can be physical, performance, or financial. In higher-risk product
categories consumers tend to search for ways to minimize the purchasing risk. This is
because they fear to make a purchasing mistake. Therefore, they may buy the most
commonly preferred brand, the most advertised brand, or the most expensive brand
(Hawkins, Best, & Coney 1986, as cited in Narasimhan & Wilcox, 1998, p. 577). However,
the associated risk changes across product categories. For example, butter might have a lower
risk profile in comparison to baby food.
Research Question 2
Does the level of perceived consequences of making a purchasing mistake affect consumers
IBPLB in a given product category?
Hypothesis 2
Ho: The level of perceived consequences of making a purchasing mistake does not
determine consumers’ IBPLB in a given category.
Ha: Consumers are more prone to buy PLBs in product categories where they believe to
have lower consequences of making a purchasing mistake.
Batra and Sinha (2000) found that the perceived risk was higher when different brands
in the category were seen to vary in quality. When the degree of perceived quality variation
between brands increases in a given category, the fear of purchasing the wrong brand rises as
well. The findings of Hoch and Banerji (1993) support this argument as well. They showed
that PL share is higher in categories where the quality variability was low.
Research Question 3
Does the level of variability in quality affect consumers’ IBPLB in a given product category?
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Hypothesis 3
Ho: The level of perceived variability in quality does not determine consumers’ IBPLB in a
given category.
Ha: Consumers are more prone to buy PLBs in product categories where they perceive lower
variability in quality levels across brands.
The last determinant of the perceived risk used in this research, refers to the search /
experience nature of the product category. Prior research has established that consumers find
NBs to be superior to PLBs in terms of satisfaction, taste, package understandability, purity,
variety, aroma, freshness, and packaging information (Belizzi, Hamilton, Krueckeberg, &
Martin, 1981). It has been argued that the nature of the product features determines
consumer’s PLB proneness. Attributes such as taste, aroma, color, and so forth relate to the
“experience” characteristics of a product, whereas, attributes that can be accessed prior to
purchase, such as ingredients or color fall under the “search” qualities of a product.
Accordingly, it is foreseen that product categories, where the consumer seeks to “experience”
before any purchase, are perceived to have a higher risk. Batra and Sinha (2000) found
consumers to be less likely to purchase PLBs in product categories with many “experience”
attributes.
Research Question 4
Does search versus experience characteristics of a product determine consumers’ IBPLB?
Hypothesis 4
Ho: Informative packaging allowing an easy assessment of product attributes does not
determine consumers’ IBPLB.
Ha: Consumers are more prone to buying PLBs in product categories where they can easily
assess the product attributes or benefits based on the given information on the package alone.
Research Assumptions
There are three main assumptions that have been made to facilitate both collection and
analysis of the data. The first assumption was that the participants of the research would be
diverse enough in their perception of private label brands. That is to say, that the respondents
were assumed to differ in their shopping behaviors. The second assumption was that the
respondents would reflect the general consumer perception of PLBs in Turkey. Lastly, the
assumption was made that the participants would be honest in their answers.
Research Ethics
The research held no tangible risk of harm to its respondents. Yet, the possible
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challenges that could have emerged due to the lack of consent and data protection were
recognized (Bryman & Bell, 2008). Respondents were given the choice to not take part in
the research if they did not feel comfortable enough about either the content of the survey or
their privacy. In order to assure that the respondents were fully informed about the details of
the research and the anonymity of their responses, an introductory notice was given. The
survey was anonymous and no personal information other than age, income and gender was
asked. Hence, identification of any person who participated in the research is unlikely.
Prior to the conducting fieldwork, the Graduate School of Business Research Ethics
Committee approved the research proposal and questionnaire.
Literature Review
There are many research in the literature examined the unexpected success of private
label. Richardson, Jain, and Dick (1996, also cited in Batra & Sinha, 2000, p. 177) developed
a detailed framework that presents three different consumer-level factors, in determining the
intentions for buying PLB. These are (1) demographic factors (income, family size, age, and
education), (2) individual differences (degree of reliance by the consumer on extrinsic cues,
and (3) consumer perceptions of the product category (degree of perceived quality, level of
perceived risk, and perceived value for money) and degree of consumer knowledge about the
category. Their framework, however, lacks information about the fact that some of these
perceptual factors may vary across product categories. In another research, Richardson, Jain,
and Dick (1994) found that consumers perceive PLBs as low quality in comparison to NBs.
They also saw that consumers, whose perception of products were influenced by extrinsic
cues, such as brand, packaging and pricing were less likely to purchase PLBs.
Ailawadi, Neslin, and Gedenk (2001) found the direct effect of demographic variables
on PLB purchasing to be weak. On the other hand demographics were seen to have
significant influence on psychographic characteristics, which determine the shopping
behavior of a consumer and therefore can be useful in segmentation, targeting and marketing.
Their research showed that the psychographic drivers of private label purchasing and national
brand purchasing differ substantially. For example, consumers with higher income levels are
less price conscious, older consumers are more likely to be shopping mavens, and women are
more likely to be innovative, impulsive, and planners than men. Furthermore, higher
education was related to higher financial status and higher levels of quality consciousness,
both of which were negatively correlated with intentions to purchase PLB. According to
their research PLB buyers were not quality conscious but price conscious shoppers. Belizzi
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et al also showed that private label shoppers value price, taste and value for money for their
choice of brands, while national brand shoppers base their choice mainly on quality,
packaging, experience and value for money. However, findings of Sethuraman (1992) and
Hoch and Banerji (1993) proved the opposite. Sethuraman empirically demonstrated a
negative correlation between the price difference between PLB and NB and the category
share of PL. Hoch & Banerji on the other hand found perceived quality to be more important
than the price in determining the PL category share.
According to the results gathered from a more recent research conducted by Walsh and
Mitchell (2010), there is an increase in quality perceptions and a more positive attitude
toward PLB. Researchers explained that due to the increased reputation and quality of PLB
products consumers no longer perceive PLB as a separate category of product. Furthermore,
they proved a positive relationship between quality, price and emotional-related value and
consumers’ intentions to buy PLB.
In the name of understanding the success factors for the high market share of PLB
industry, many researchers examined the quality, price and customer related influencers.
Many agreed that high-quality PLBs make store differentiation easier to achieve and lower
NB price premium (Richardson, Jain, & Dick, 1996). On the other hand, higher quality
serves as a justification for higher prices as these products are perceived as premium and seen
equal to NBs (Mills, 1995). De Wulf et al. (2005) showed that as the NBs increase in price
consumers either prefer PLB or do not buy at all. On the contrary, according to Amrouche et
al. (2007), in case of price increase NB consumers are more likely to switch among NB
products rather than to PLB. As for customer related factors, it is agreed that the lower-
income consumers prefer PLB, as they are more price sensitive, especially when the NB-PLB
price gap is high (Putsis & Dhar, 2001; Sethuraman & Cole, 1999). According to Ailawadi et
al. (1999) due to the low-quality perception associated with PLB, belief in the positive
relationship between price and quality discouraged the purchase of lower-priced PLB
products.
In their research Ailawadi et al. (2008) built a simultaneous model looking at the
relationship between a household’s PL share at a chain and its loyalty to that chain, which is
measured as the household’s total spending in the chain (SOW: share of wallet). Their
research proved a two-sided direct correlation between PL share and SOW. Results indicated
a positive relationship between the store loyalty and PL share as SOW initially increased
noticeably along with the PL share until the PL share reached approximately 40% and after
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that SOW actually started to decrease. Although PLB increases store loyalty, retailers should
note that dominant presence of PLB seems to make even the high-level PL buyers feel
constrained in their choices and therefore causes a decline in their overall loyalty to the store.
As noted by the researchers as well, the research fails to analyze the relationship between
SOW and PL across categories. From the previous findings we know that the purchasing
intention for PLB varies across product categories (Sethuraman, 1992). Therefore, it would
be valuable both for the researchers and the retailers to know which categories of products
are more sensitive to changes in the PL share and which are less affected by the PL
dominance in the store.
Consumer Behavior Across Categories
As noted earlier, consumers show changing purchasing behaviors for different product
categories. Previous researches have shown that the level of perceived risk in the category is
a determining factor in PLB purchases (Richardson, Jain, and Dick (1996). Narasimhan and
Wilcox (1998) linked the willingness of consumers to switch from a NB to a PLB to the risk
consumers associate with making purchases in a given category as well as measures
describing the ability of retailer to offer a PL of comparable quality to the NB in the given
category.
Consumers’ decision-making process is a form of problem solving. There are three
distinctive factors identified that the extent of the problem-solving process depends on and
they are (1) degree of involvement, (2) degree of differentiation between alternatives, and (3)
amount of time for deliberation (Blackwell, Miniard, & Engel, 2005). The degree of
involvement is determined by the given importance to the product by the consumers. As the
authors stated within the consumer decision process the involvement happens when intrinsic
personal characteristics like needs, values or self-concept are confronted with a certain
marketing stimuli in a given situation. Blackwell et al. summarized the factors affecting the
level of personal involvement under three categories such as personal, product and
situational. These factors shed some light on the associated risk factors to the decision
making process of consumers for PLB.
Personal Factors
When the outcome of a certain decision affects the person directly in terms of self-
image, health, beauty or physical condition the person tends to feel the need to be involved in
the decision making process on a higher level. Blackwell, Miniard, and Engel (2005)
explained that it is the activation of need and drive that motivates one to get involved
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whereas in the absence of both the person will be less likely to get involved. Buying
cosmetics or medicine are examples of decision processes where there is likely to be high
personal involvement as the products affect the person’s health or self-image directly.
Product Factors
The perceived risk in purchasing or using a product or a brand determines the degree of
involvement. Consumers’ purchase intentions are highly influenced by the risks associated
with the purchasing behavior (Bettman, 1974). Risk may come in many forms such as
physical (risk of physical harm), psychological (social disapproval), performance (fear that
the product will not possess as desired), and financial (fear that the purchasing of the product
will cause loss of earnings).
Situational Factors
Lastly situational factors are mostly related to the perceived social risks. Within this
category the behavior is very much based on the fact whether the product will be consumed
alone or with others. Livesey & Lennon (1978) reported in their research that English
consumers prefer to serve national branded tea to their guests while drinking PL branded tea
when outside of a social context. The more people are concerned about the approval of the
society the more careful and selective they will be in their choice of brands.
Perceived Risk Factors
As mentioned earlier, it is evidently seen that there is a significant difference between
NB proneness and PLM proneness based on the perceived risk associated with the given
product category (Batra & Sinha, 2000; Bettmann, 1974; Richardson, Jain, & Dick, 1996).
Here, the risk is determined based on the degree of fear of making the wrong decision, which
Blackwell, Miniard and Engel (2005) talked about under product factors. Consumer
measures the consequences of making a mistake while deciding between products and
brands. These consequences and therefore the attached risks can be physical, financial, or
psychological risks. For example, in terms of the risk factors involved, purchasing toiletries
is less sensitive than buying baby food as it is less risky to buy beverages as opposed to meat.
There is also a social aspect attached to the level of comfort in making a mistake. As
mentioned under situational factors within a social environment the risk associated with the
purchasing of certain brands or products increases.
As suggested by Batra and Sinha (2000), the PLB proneness increases in product
categories where consumers perceive lower variability in quality levels across brands. In
other words, if there is not much difference in terms of quality between the products within a
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category, consumers are more likely to prefer PLBs. However, on the other hand as the
variety in quality increases consumers are less likely to buy PLBs when they can afford
higher quality products and experience higher satisfaction. Furthermore, the ambiguity of
quality causes the purchasing decision to be based on other things like branding. That is to
say it is likely that a consumer will pick the cheapest national brand rather than purchasing a
private label brand.
Another determinant factor of perceived risk raised by some researchers is the search
versus experience nature (Erdem & Swait, 1998; Walsh & Mitchell, 2000). Sethuraman and
Cole (1999) argued that NBs are more likely to set a premium price if they were higher on
hedonic aspects as opposed to functional (reviewed by Batra & Sinha, 2000). Some
researchers have suspected the relationship between PLB proneness and the nature of product
features. Batra & Sinha suggest that the hedonic attributes like taste, aroma, texture, and
color are characteristics that influence the perception through experience rather than search.
Search on the other hand is defined by pre-purchase attributes that can be verified through
direct observation or product features listed on the back of the package, or any other
accessible sources. Products with high experience attributes require some previous
knowledge. Therefore, the absence of any past experience or sufficient information increases
uncertainty and the level of perceived risk. In such cases, consumers tend to be more prone
to preferring NBs in the name of reducing the risk. Richardson, Jain, and Dick (1996)
advised that consumers might be more prone to prefer PLBs for products with search
attributes rather than experience benefits.
Lastly, the level of price consciousness determines the level of perceived financial risk
attached to a product category. Previous research has proved that a consumer’s level of price
consciousness rises with lower incomes. On the other hand consumers with higher income
are less price conscious. However, it should be noted that low price and PLB are associated
with low quality. Therefore, a quality conscious low-income consumer may still prefer a
relatively cheap national to a private label brand in certain product categories.
Conclusion
As PLBs in the consumer packaged goods industry have been enjoying a worldwide
growth for many years, the subject has become an area of interest for many researchers.
Several studies have examined the socioeconomic and demographic characteristics of PL
buyers, mainly supporting the direct link between PLB’s lower price ranges and consumers’
intention to buy PLB. However, most of the reviews studied either the market structure or
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the PL market from NB manufacturers’ and retailers’ perspectives.
Consumers’ purchasing decisions are highly determined by the perceived risks
associated with buying a product. Following the Batra and Sinha (2000) research as an
example, this paper focused on four consumer related factors driving the perceived risk and
they are fear of making a purchasing mistake (involving self image and social approval),
degree of quality variation in a given category, search / experience nature of the product
category and lastly price consciousness. Previous research (Ailawadi, Pauwels, &
Steenkamp, 2008) also suggested PLB behavior to be investigated across product categories.
Additionally, many researchers (Kumar & Steenkamp, 2007; Narasimhan & Wilcox, 1998;
Richardson, Jain, & Dick, 1996) point out the differing successes of PLBs across categories.
This research, therefore, tried to understand if and how the four determining factors of
perceived risk influence consumers’ changing PLB purchasing behavior across categories.
Research Methodology
Research Approach and Strategy
A quantitative deductive approach was adopted in this research. In several papers, such
as Narasimhan and Wilcox (1998), perceived level of risk was seen to influence PLB
purchasing behavior. The research began with the question whether this observation also
holds in Turkey. The question was modified with the replacement of the independent
variable with four proxies. The theoretical backbone that allowed this modification was
borrowed from Batra and Sinha (2000). Then five hypotheses were postulated to check how
the four proxy variables influenced PLB purchasing behavior. In order to test these
hypotheses across a variety of product categories, a survey containing multiple Likert items
on five point scales was designed and numerical data for the proxy variables were collected
(Bryman & Bell, 2007). The data were later scrutinized using correlation (Leedy & Ormrod,
2010) and regression analyses (Lind, Marchal, & Wathen, 2010). The hypotheses were
confirmed or rejected based on these statistical analyses. The quantitative approach provided
the precision required for this in-depth analysis (Bryman & Bell, 2007).
Research Design, Data Collection and Research Instruments
A social survey research design was used to collect and analyze the data. The main aim
of the research was to see how the risk middle and upper-middle class Turkish consumers
associate with PLBs differs across product categories, and how this perceived risk defines the
end purchasing behavior. Secondly, the research was designed to control if demographics
such as age, gender and income have any effect on one’s level of intention to purchase
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private label brands.
Thirteen questions were administered using an online survey. The survey was directly
e-mailed to a total of 50 people who the researcher is directly or indirectly acquainted with,
and it was advertised on Facebook and LinkedIn pages of different profile groups.
Furthermore, the respondents were asked to share the survey with their family and friends.
Hence, more than half of the total respondents are not acquaintances of the researcher. It is
evident that web-based surveys have increasingly become the choice of many market
research studies. Compared to traditional methods, online surveys have many advantages
such as high quality, speed, and cost-effectiveness (Aaker, Kumar & Day, 2004). Having no
interviewers involved in the process eliminates the possible interviewer error and bias.
Furthermore, an on-line environment assures voluntary participation and therefore
encourages honest and spontaneous answers (Aaker, Kumar & Day). It also allows the
respondent to take the survey in his own time free of any disturbances from his shopping time
and of any pressure from the interviewer. Lastly, and most importantly, increased
availability of Internet and on-line population makes it possible for researchers to reach a
broader range of demographics (Aaker, Kumar & Day). In this particular study, it was
important to attract respondents from different demographic backgrounds and to attain a
representative distribution across the gender, age and income categories indicated in the
survey. According to the latest Internet Usage Stats and Market Report (2010) launched by
ITU (International Telecommunications Union), Internet penetration in Turkey is 45%.
Given the time constraint, the positive attributes of a web-based market research and the cost
involved with the alternative methodologies, an online survey was judged to be the most
appropriate design for the purposes of this research.
The main concern of this research was to identify how the consumer perception of PLB
varies across different product categories along with the level of perceived risk. Therefore,
the selection of product categories was a crucial step at the start of the survey design. Nine
categories selected for this study were as follows: toilet paper, oil, detergent, dry pulses,
yoghurt, tea, cheese, soap and shampoo. They were chosen according to the Retailing
Institute’s private label brands report (2006) that detailed the most popular PLB product
categories, and to the retailer trends data that was gathered by AC Nielsen (2006) from the
six biggest supermarkets and hypermarkets in Turkey. Food, personal care products and
cleaning products were indeed found to be the top three product categories in terms of growth
in 2006. Within these categories, dry pulses, paper products, milk, yoghurt and cheese were
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the top five items with the highest turnover in 2006. Furthermore, these products are
believed to be representative in the sense that the expected risks that consumers assign to
these items occupy a large spectrum. Products like shampoo, toilet paper, cheese, and
yoghurt are expected to have higher perceived risks (both social and physical risks). On the
other hand dry pulses, oil, soap, detergent and tea are predicted to be products with lower
risks. Unlike in previous research, respondents were asked to answer each question for each
of the nine product categories at once. This made it possible to circumvent any annoyance
and carelessness that could arise when the respondent is asked the same question nine times
repeatedly.
Four category-based determinants of the level of perceived risk assigned to PLBs were
included in the survey as independent variables: (1) price-sensitivity, (2) fear of making a
purchase mistake, (3) degree of quality variation, and (3) “search” versus “experience” nature
of product category. Tabachnick and Fidell (as cited in Pallant, 2005, p. 142) suggest a
formula for calculating the samle size requirements and gives information on the number of
independent variables one should use. The formula is: N > 50 + 8m (where m = number of
independent variables). Furthermore, they explain that for stepwise regression the ratio of 40
cases for every independent variable should be expected. Therefore, in the current reserach
with 108 samples four independent variables were judged to be enough. All scales were
measured on a 5-point Likert scale (1: strongly disagree and 5: strongly agree) (Batra &
Sinha, 2000; Shannon & Mandhachitara, 2005), and were later used to explain the variation
of consumer behaviors across categories.
In line with the previous research (Batra & Sinha, 2000; Walsh & Mitchell, 2010;
Zielke & Dobbelstein, 2007), consumption habits were measured with three items on a five-
point scale. Consumers were asked to rate their purchasing of (1) known brands that are sold
in almost every store, (2) private label brands sold at their preferred retailer only, and (3) no
brand in particular. This measurement was done in order to examine the expected
relationship between one’s likeliness to purchase PLBs and the level of perceived risk.
Lastly, gender, age and monthly income were used in the survey as control variables
because in previous studies they have been associated with PLB purchasing behavior (Dar &
Hoch, 1997; Richardson, Jain, & Dick, 1996). On the other hand Walsh and Mitchell (2010)
did not find age and gender to add to the explanation of consumer’s PLB purchasing
behavior. A dichotomous variable was used to measure gender – female were coded one (1)
while males were coded two (2). Age and income were measured using six brackets.
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Sampling
The research population is comprised of mostly middle and upper-middle class Turkish
consumers with Internet access, living mainly in Istanbul. Respondents were consumers with
a disposable income, either from their own personal earnings or from their parents’ income.
Any grocery shopper living in Turkey, regardless of his purchasing behavior, was welcomed
to take part in the study. This helped to have a wide range of respondents from different
demographic background and with different perspectives on PLBs.
The study used two samples. The first 80% (86 people) of the total sample (108
people) was used to test the proposed model and the remaining 20% (22) was used to validate
the findings. Using a second independent sample to test and support the conceptual model
was consistent with the previous research (e.g., Walsh & Mitchell, 2010). The demographic
distributions in the two partitions were in line with that of the whole data set. This ensured
that the model was not invalidated for foreseeable biases and that the test was fair. Table 1
below provides a description of the sample characteristics.
Table 1
Sample Characteristics
Socio-demographic characteristic Sample 1 Sample 2
Age
Gender
Monthly income
Total
<25
25-30
31.35
36-40
41-45
>45
Male
Female
<1,000 TL
1,000 TL– 3,000 TL
3,000 TL – 5,000 TL
5,000 TL – 7,000 TL
7,000 TL – 9,000 TL
>9,000 TL
8 (9%)
39 (45%)
19 (22%)
10 (27%)
2 (2%)
8 (9%)
54 (63%)
32 (37%)
13 (15%)
43 (50%)
15 (17%)
6 (7%)
0
9 (11%)
86 (80%)
1 (4%)
8 (36%)
5 (23%)
5 (23%)
1 (4%)
2 (9%)
15 (68%)
7 (32%)
3 (14%)
12 (55%)
5 (23%)
1 (4%)
0
1 (4%)
22 (20%)
Note. Reported are nominal and proportional results for each subsample.
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Data Analysis Methods
The data for this research was collected from middle and upper middle-class Turkish
grocerry shoppers currently living in Turkey. Turkey was chosen firstly because it is where
the PL market is growing the fastest (AC Nielsen, 2005) and secondly to help address the
lack of insight on the subject in Turkey. Furthermore, there is also a lack of non-US studies
in the field (Walsh & Mitchell, 2005). It is therefore important to test if the already proven
results are applicable across cultures and in different economies.
In order ensure high level of accuracy, a Turkish version of the questionnaire was
prepared. The terminology used in the survey was adapted for Turkish grocery shoppers to
prevent any kind of misunderstanding and to achieve a uniformity of meaning (Nasif, Al-
Daeaj, Ebrahimi, & Thibodeaux, 1991). No back translation testing was performed on the
survey, that would have helped to identify the possible errors, which may have occured
during the translation process. However, since the author, who prepared the research survey,
is the native speaker of the target language, level of error is assumed to be at a minimum, if at
all.
Microsoft Excel was used to construct a table summarizing the average responses in
each product category, and pie diagrams illustrated the demographic features of the total
sample. This allowed a concise way of providing a feel for the whole data set.
SPSS was employed to carry out several correlation analyses and regressions involving
the explanatory variables. The resulting correlation and regression coefficients were
delivered with their p-values indicating their respective statistical significances. The
statistical analyses and inferences were based on the assumption that the involved regression
errors were normally distributed.
A general-to-specific selection criterion was used to come up with a linear model for
predicting PLB proneness. At each step, the explanatory variable with the highest p-value
was dropped and a new regression was conducted with the remaining variables. The
reduction process continued until no regression coefficient had a p-value greater than .05.
Meanwhile changes in R2 were observed to take into consideration the trade-off between
accuracy and complexity of the candidate model.
The final model was validated on the part of the sample that was left out of the
calibration process. This was done by employing the conventional method of comparing the
root mean squared error of validation to the standard error of the estimate.
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Research Findings, Analysis and Discussion
Research Findings
Demographics
The survey obtained 108 responses in total and displayed rich demographics (gender,
age and income). 66% of the people participated in the study were female and 34% were
males (see Figure 2). The age profile reflected in Figure 3 below shows that 44% of the
respondents falls in the 25-30 age bracket, 22% in the 31-35 age bracket, 14% in the 36-40
bracket, 9% in the above 45, 8% in the below 25 and 3% fall within the 41-45 age bracket.
Therefore, the results mainly represent the purchasing behavior of consumers between the
ages of 25 and 35.
Figure 2. Gender distribution of participants.
Fifty-one percent of the respondents earn between 1,000 and 3,000 TL1 (Turkish Lira)
a month. Therefore, it can be assumed that the survey results reflect majorly the PLB
perceptions of middle and upper middle-class people. It should be noted that no significant
correlation seen to exist between age and income level. Moreover, one’s income level was
not found to be in correlation with either his price consciousness or private label purchasing.
These findings are possibly culture specific, and they hint at the importance of non-economic
(e.g. psychological) factors underlying the studied consumption behavior. As opposed to
some previous research results (e.g., Kilian, Walsh, & Buxel, 2008), males were observed to
be slightly more prone to buy PLBs than females. (More specifically, the average level of
intention to buy PLBs was 2.12 for males and 1.9 for females).
1 Equivalent of €500 and €1,500
64%
36%
Female
Male
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Figure 3. Age distribution of participants.
Figure 4. Income (monthly) distribution of participants.
IBPLB was regressed onto the three demographics to test if gender, age and / or income
had determining roles in consumers’ propensity to purchase PLBs. Table 2 below shows the
results of the regression analysis. Non of the demographic have a statistically significant
relationship with IBPLB. That means age, gender and income do not necessarily determine
one’s intention to buy private label brands. In terms of gender, male consumers (μ = 2.12)
were seen to be slightly more likely to purchase PLBs compared to females (μ = 1,9).
8%
44%
22%
14%
3% 9%
<25
25-30
31-35
36-40
41-45
>45
15%
51%
19%
6%
0%9%
<1,000 TL
1,000 - 3,000 TL
3,000 - 5,000 TL
5,000 - 7,000 TL
7,000 - 9,000 TL
>9,000 TL
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Table 2
Demographics
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) Gender Age Income
1.820 -.006 .054 .050
.417
.186
.115
.077
-.004 .052 .072
4.370 -.033 .467 .641
.000
.974
.642
.524
Cross-category findings
The results obtained from the survey showed that the four variables (determining the
level of perceived risk) differ across the product categories. According to the descriptive
statistics shown in Table 3, it is possible to separate the product categories into two groups as
per their significantly different risk profiles. The underlined product categories (dry pulses,
toilet paper, detergent and soap) in Table 3, fall in the “low-risk profile” group whereas the
other five product categories (cheese, oil, tea, yoghurt and shampoo) belong to the “high-risk
profile” group. Low-risk product categories vary less in terms of quality and have high
search attributes. They also have lower consequences for a purchasing mistake, and therefore
allow the consumer to be more price-conscious. On the other hand, high-risk product
categories possess higher quality variation among different brands, and therefore have higher
consequences for a purchasing mistake. They also have high experience attributes and can
accommodate more price consciousness. Hence, it was found that the respondents were more
likely to buy PLBs in categories where there is low-risk involved.
Yoghurt and cheese were perceived to have the highest purchasing risk whereas dry
pulses were perceived to have the lowest. Cheese was judged to have the highest quality
variation across brands whereas dry pulses were again judged to have the lowest. Similarly,
respondents were prone to choose the brand with the lowest price when buying dry pulses,
and were less likely to exhibit the same behavior while buying cheese. Lastly, search /
experience attributes of a product was seen to be almost equally important for each of the
product categories. Detergent and soap were rated highest on search qualities while yoghurt
and cheese were rated lowest. (In other words, yoghurt and cheese were judged to highest
experience qualities).
Overall, PLB purchasing behavior was observed to display a relation with each of the
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four determinants of the perceived risk factors, across categories. It increases with high price
consciousness and higher search attributes, and decreases with high variation in quality and
higher consequences of purchasing mistake. The mean results were found to be significantly
high, in all categories, for quality variation and for consequences of making a purchasing
mistake.
Table 3
Descriptive Statistics
Note. Reported mean values (standard deviations) are calculated from the total sample of 108
participants, for each product category. Higher value in the Consequences of Purchasing
Mistake column means higher consequences; higher value in Quality Variation means higher
variability and higher value in Search / Experience attributes means higher search
characteristics.
Research Analysis and Discussion
Findings were analyzed, firstly to see how the four selected variables determine one’s
intention to buy private label brands (IBPLB), and secondly to identify the correlations
between each of the dependent and independent variables.
Since all four variables were predicted to have a determining effect on consumers’ PLB
purchasing behavior, a multiple regression analysis was run on SPSS and IBPLB was
regressed onto the four independent variables. (One item was used for measuring price
consciousness, three items for the effects of search versus experience characteristics of the
product category, two items for the affects of quality variation within the product category,
Product Category PC QV CPM SE IBPLB
Dry Pulses
Toilet Paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
2.27 (0.99)
2.24 (1.01)
1.73 (0.79)
2.22 (1.04)
1.98 (0.92)
1.94 (0.85)
1.75 (0.71)
2.20 (1.02)
1.76 (0.75)
3.28 (1.12)
3.88 (0.93)
4.32 (0.82)
3.58 (1.02)
4.03 (0.94)
4.01 (0.97)
4.12 (0.91)
3.55 (1.11)
4.07 (0.97)
3.26 (1.18)
3.43 (1.20)
4.02 (0.98)
3.41 (1.10)
3.81 (1.01)
3.84 (1.05)
4.02 (1.03)
3.41 (1.18)
3.87 (1.14)
2.90 (1.12)
2.86 (1.15)
2.84 (1.07)
2.99 (1.13)
2.93 (1.11)
2.86 (1.09)
2.82 (1.07)
2.97 (1.10)
2.88 (1.07)
2.58 (1.15)
2.29 (1.12)
1.63 (0.98)
2.25 (1.06)
1.73 (0.93)
1.78 (0.95)
1.61 (0.92)
2.38 (1.04)
1.73 (1.00)
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and three items for measuring the affects of making a purchasing mistake.) The analysis was
conducted on sample 1 (first 80% of the total data). The results showed a coefficient of
determination (R²) of .259 and beta values between -.406 and .108 (see Table 4).
Table 4
Multiple Regression Analysis 1
Model Unstandardized Coefficients Standardized
Coefficients
T
Significance B Standard Error Beta
(Constant) PC SE CPM QV
3.978 .092 .154 -.537 -.154
.758
.116
.139
.146
.137
.082 .108 -.406 -.124
5.248 .791 .106
-3.687 -1.128
.000
.431
.272
.000
.263
Then the unstandardized coefficients and p-values of each coefficient were examined.
As evident in the above table, CPM (consumer purchasing mistake) is the only explanatory
variable that has statistically significant relations with IBPLB. The effects of PC (price
consciousness) are weakest (β = .08, t (degrees of freedom) = .791, p >.431). The other two
variables (QV and SE) also have weak significance due to their high p-values, which were
respectively .263 and .272. The results indicate a strong negative relationship between PLB
purchases and CPM, meaning that as CPM increases, PLB purchases decrease substantially (-
.537). The underlying reason for the weak significances of PC (price consciousness), SE
(search / experience attributes) and QV (quality variation) may be due to a hidden co-
linearity. The issue of co-linearity will be observed later in this research report.
According to the tradition of general-to-specific modeling philosophy, PC is the first
variable that needs to be dropped as one proceeds to form a better model with higher
prediction power. After eliminating PC from the analysis, IBPLB was regressed on to the
remaining three variables (CPM, QV and SE). According to the regression results (see Table
5), CPM (p ~ 0) again was seen to be the only statistically significant explanatory variable
with SE having the weakest significance (β = .117, t (degrees of freedom) = 1.214, p >.228).
Thereafter, IBPLB was regressed onto CPM and QV (see Table 6). The results were the same
as in the previous analysis, leaving CPM (p ~ 0) as the only significant variable influencing
the PLB purchasing behavior. Finally, CPM was regressed on to IBPLB (see Table 7) and
CPM was found to have a significant effect on the PLB purchasing behavior with a
coefficient of -.625. Put in qualitative terms, as the consequences of purchasing mistake
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increases, PLB purchasing gets reduced.
Table 5
Multiple Regression Analysis 2
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) QV CPM SE
4.300 -.178 -.559 .167
.638
.133
.143
.138
-.143 -.423 .117
6.740 -1.339 -3.920 1.214
,000 .184 .000 .228
Table 6
Multiple Regression Analysis 3
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) QV CPM
4.709 -.184 -.537
.543
.133
.142
-.147 -.406
8.664 -1.375 -3.783
,000 .173 .000
Table 7
Multiple Regression Analysis 4
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) CPM
4.328 -.625
.470
.127
-.472 9.204 -4.906
,000 .000
This final regression was taken as the conceptual model used for predicting PLB
purchasing behavior in the remaining 20% of the total sample. Although R2 was only .223,
as indicated in Table 8, the model had good predictive power over sample 2. Root mean
squared error of validation (RMSE) turned out to be .71, which was only slightly above the
standard error of the estimate .69. RMSE was expected to be greater than the standard error
of the estimate, since the model was tuned with respect to sample 1. However, the smallness
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of the difference between the two quantities indicates that the model was tuned well and was
validated.
Table 8
Multiple Regression Analysis 4
Model R R Square Adjusted R Square Standard Error of Estimate
1 .472a
.223 .213 .6909807
Correlation Analysis
Previous research found the four independent variables (price consciousness, quality
variation, consequences of making a purchasing mistake and search / experience attributes of
a product) to have direct or indirect relationships with one’s intention to buy private label
brands (Batra & Sinha, 2000). In their proposed model Batra and Sinha showed that PC and
CPM had direct effect on PLB purchasing while SE and QV had indirect relationship with
PLB. They explained the non-significant influence of CPM in the base model partly by the
high correlation between consequences of making a purchasing mistake and quality variation.
This correlation is understandable especially since quality variation in a given product
category increases the uncertainty, which makes it more likely to commit a purchasing
mistake. In the current research CPM is seen to be the only independent variable to show a
statistically significant relationship with IBPLB.
There are several general ways of detecting a multicollinearity problem and they
include the following: (1) an independent variable known to be important has a
nonsignificant regression coefficient (2) a regression coefficient that should have a positive
sign ends up having a negative sign, or vice versa, (3) when an independent variable is added
or removed, there is a drastic change in the values of the remaining coefficients (Lind,
Marchal, & Wathen, 2010). Additionally variance inflation factor (VIF) and tolerance values
can be examined. Table highest VIF is .968 and the lowest tolerance is 1.033, and they do
not indicate multicollinearity to be an issue (see Table 9).
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Table 9
Testing for multicollinearity (VIF and tolerance values)
Independent Variables VIF Tolerance
PC
QV
SE
CPM
.855
.757
.968
.754
1.170
1.320
1.033
1.325
However, it is advised that these values should only be taken as a warning sign, and
correlation between independent variables should be checked (Pallant, 2009). In order to
understand the potential co-varying of the four variables among themselves, correlation
analyses were conducted (see Table 10). The findings show no significant relationship
between the search / experience attributes of a product category and any of the other
variables. Correlations between PC and the other two variables (CPM and QV) are
significant, yet weak (-.295 and -.324). On the other hand CPM and QV tend to have a
moderate positive correlation that is significant at the 0.01 level (.450).
Table 10
Correlation Analysis
Variables PC CPM QV SE
PC
CPM
QV
SE
1
-.295**
-.324**
.080
-.295**
1
.450**
.130
-.324**
.450**
1
.030
.080
.130
.030
1
Note. **Correlation is significant at the 0.01 level.
Furthermore, the correlation between CPM and QV can also be observed through a new
regression analysis where IBPLB is regressed onto only the three independent variables (QV,
PC and SE). The results show that both the QV coefficient (from -.154 to -.351) and its
significance (from .263 to .011) changed considerably. Therefore, it can be concluded that it
is the inclusion of CPM, which renders QV as an insignificant explanatory factor in the most
general model. Note that the above mentioned correlations were expected since coefficient
changes were observed at each step of the general-to-specific modeling (see Table 11). At
step 4, when we removed QV from the regression, the coefficient of CPM increased
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significantly (from -.537 to -.625).
Table 11
Coefficient variations
Constant PC SE QV CPM
3.978
4.300
4.709
4.328
.092
-
-
-
.154
.167
-
-
-.154
-.178
-.184
-
-.537
-.559
-.537
-.625
Hypothesis Testing
The research questions were answered in light of the results gained from the above
regression analyses. The four questions sought clarification of the expected effect of the four
independent variables on consumers’ intention to buy PLBs. While the regression
coefficients were used to explain the relationships between variables, the p-values were
observed to test their statistical significances.
Hypothesis 1 theorized that price conscious consumers are more prone to buying
PLBs. The p-value was higher than .05, which meant that price consciousness is not a
determining factor for consumers’ IBPLB. Its nonsignificance is understandable since the
research sample consists of middle and upper-middle class people who are les likely to be
price-conscious consumers. Given the demographics and the results of the regression
analyses the sample is rather brand conscious. Brand conscious consumers tend to prefer any
national brand to private label brands. Therefore it is still possible for a price sensitive yet
brand conscious consumer to purchase the national branded product with lowest price rather
than purchasing a private label brand.
Table 12
Multiple Regression Results
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) PC
3.978 .092
.758
.116
.082 5.248 .791
.000
.431
Note. IBPLB regressed over PC, CPM, QV, and SE.
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Previous research (Ailawadi et al, 2001; Rothe & Lamont, 1973) found PLB products
to be preferred by price conscious people. However, it should be noted that, as explained
under demographic findings section, there was no correlation found between income level
and either IBPLB or price consciousness. Therefore, unlike the findings of some previous
research (Lumpkin, Hawes & Darden, 1986; Richardson, Jain, & Dick, 1996) demographics
such as income, age and gender were not seen to be in direct correlation with consumers’
IBPLB.
Table 13
Multiple Regression Results
Model Unstandardized Coefficients Standardized
Coefficients
t
Significance B Standard Error Beta
(Constant) CPM
3.978 -.537
.758
.146
-.406 5.248 -3.687
.000
.000 Note. IBPLB regressed over PC, CPM, QV and SE.
Hypothesis 2 theorized that consumers are more prone to buy PLBs in product
categories where they believe to have lower consequences of making a purchasing mistake.
This hypothesis was tested looking at the coefficient and p-value for CPM, in Table 11. The
null hypothesis was rejected and the alternative hypothesis was accepted since the p-value
was less than .05. There was a negative relationship between the two variables (-.537). This
finding was consistent with the previous research (Batra & Sinha, 2000; Narasimhan &
Wilcox, 1998).
Hypothesis 3 suspected that consumers are more prone to buying PLBs in product
categories where they perceive lower variability in quality levels across brands. The p-
value was higher than .05 and the null hypothesis could not be rejected (see Table 14). Its
nonsignificance was partly caused by moderate positive correlation between consequences of
purchase mistake and quality variation (see Table 8). Additionally, CPM was regressed onto
QV, PC and SE. The results revealed a positive relationship between QV and CPM (β =
.365, t (degrees of freedom) = 3.822, p ~ 0). That is to say the smaller the range of quality
across brands, the more reduced the level of perceived risk of making a purchasing mistake.
Previous research findings (Batra & Sinha, 2000; Hoch & Banerji, 1993; Narasimhan &
Wilcox, 1998) confirm that the degree of perceived risk increases with higher degrees of
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perceived quality variation across brands in a given category. Hoch and Banerji found a
negative relationship between PLB share and quality variability of a certain product category.
Table 14
Multiple Regression Results
Model Unstandardized Coefficients Standardized
Coefficients
T
Significance B Standard Error Beta
(Constant) QV
3.978 -.154
.758
.137
-.124 5.248 -1.128
.000
.263 Note. IBPLB regressed over PC, CPM, QV and SE.
Hypothesis 4 theorized that consumers are more prone to buying PLBs in product
categories where they can easily assess the product attributes or benefits based on the given
information on the package alone. This hypothesis was tested examining the relevant
numbers given in Table 15. Since the p-value was found to be higher than .05, the null
hypothesis could not be rejected. The coefficient value suggested a positive relationship
between a product category’s search attributes and consumers’ IBPLB. However, the
relationship was not seen to be statistically significant. Therefore, it was concluded that
search characteristics of a product category, meaning an informative packaging that allows an
easy assessment of the product attributes, does not determine consumers’ IBPLB. This
conclusion, however, should not be interpreted as packaging having no effect on the
consumers’ purchasing behavior. Table 3 reveals the interesting fact that there is almost no
variation among the average values of product categories, meaning that packaging is
considered to be almost equally important for all categories included in this research.
These findings did not support the results of the previous research. Search / experience
attributes of a product category were previously examined by Erdem and Swait (1998) and
Batra and Sinha (2000). There, consumers were found to be more likely to purchase NBs in
product categories with greater experience attributes. On the other hand, in cases where it
was possible to make an adequate brand comparison based on the given information given by
packaging (e.g. color, ingredients, calories), it was easier for consumers to choose PLBs.
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Table 15
Multiple Regression Results
Model Un-standardized Coefficients Standardized
Coefficients
T
Significance B Standard Error Beta
(Constant) SE
3.978 .154
.758
.139
.108 5.248 .106
.000
.272 Note. IBPLB regressed over PC, CPM, QV and SE.
Finally, the discrepancy between these findings and the existing literature can be
explained as follows. Packaging attributes may still be used as means for judging the product
at the time of purchasing. The lack of relationship between SE and IBPLB may be due the
possibility that, in situations where the consumer needs to make a comparison between
various brands, the PL product is not even considered as an alternative due to its high
perceived risk profile. Hoch and Ha (1986) showed that consumers are more likely to base
their judgments on brand name when faced with ambiguous attributes. Consequently, it can
be argued that, because PLBs are ambiguous in their nature compared to NBs, even in
product categories with high search characteristics consumers do not necessarily choose
PLBs. In such cases, consumers’ IBPLB is more likely to be determined by the level of
perceived risk factors influenced by CPM and QV. The discrepancy may as well be related to
the level of brand consciousness among Turkish consumers. Therefore, it is suggested that
the brand consciousness is included as a variable in future research.
Research Limitations
Sample size could be increased in order to strengthen the conclusions of the statistical
arguments made in the analysis. Greater sample size would have led to a more precise
calibration and a more reliable validation of the model.
Current research analyzed four category-based determinants of level of perceived risk
across nine product categories. The final analysis made it clear that the risks associated with
products differed across categories. However it would be valuable to extend the analysis
further and see how other product categories are effected by risk factors. Additionally,
different independent variables could be chosen to form better model with higher fit.
Moreover, paper questionnaires and face-to-face interviews could be used to reach the
part of the low-income population that does not have Internet access. The survey itself could
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also be improved. For instance, PC and IBLB vectors were constructed using single item
measurements. Two or greater number of items could have been used to increase the
reliability of the data.
Research Conclusions
The effect of the level of perceived risk on consumers’ PLB purchasing behavior has
previously been demonstrated by many researchers (Richardson, Jain & Dick, 1996;
Sethuraman & Cole, 1997, Walsh & Mitchell, 2010). There have been various explanations
as to what determines the level of this risk, and four were selected for examination for the
purposes of this study (PC, CPM, SE, and QV). Moreover, previous research either proved
(Batra & Sinha, 2000; Walsh & Mitchell, 2010) or suspected (Ailawadi, Pauwels &
Steenkamp, 2008) that consumers’ intention to buy PLBs varied across product categories.
This study was aimed at understanding how the four selected variables affected Turkish
consumers’ intentions to buy PLBs across nine product categories.
The results indicated that all four variables together do not act as a determining factor
on consumers’ IBPLB. To be more precise, consumer’s PLB purchasing could not be
modeled using all four variables together in a statistically robust sense. CPM was found to be
the only significantly effective construct (-.537, p = 0). This indicates that consumers’
IBPLB increases as the perceived consequences of making a purchasing mistake in a given
product category diminish. This relationship was expected in the sense that, as hypothesized
in H2, the level of perceived risk associated with PLB in a product category is likely to
increase with greater levels of CPM. Consequences of choosing the wrong brand may be
perceived to be high, (1) if the outcome affects the person directly in terms of self-image,
health, beauty or physical condition (Blackwell, Miniard, & Engel, 2005), (2) if the consumer
is eager for social approval. Kumar and Steenkamp (2007) refer to the consumers in the
latter group as “emotional / social benefit seekers”. Because PLBs are often associated with
low quality, the products that are meant to be consumed in the presence of peers tend to hold
high social risks (Zielke & Dobbelstein, 2007). Mean values revealed CPM to be higher for
shampoo, oil, tea, yoghurt and cheese. These product categories may not necessarily have
any social risk attached to them. However, they were precisely the product categories that
consumers perceived to possess the greatest quality variation among brands.
The other three independent variables (QV, SE and PC) were not found to have any
direct influence on IBPLB. Further analysis indicated the presence of a moderate positive
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relationship between QV and CPM. The CPM effect is suspected to mediate the effects of
QV on IBPLB. Accordingly, CPM increases with higher perceived quality variations among
the brands of a given product category (.450, p = .01). The co-varying relationship was
consistent with the findings of Batra and Sinha (2000). Their results explained the non-
significance of the QV effect by pointing out its high correlation with the consequences of
purchasing mistake.
As opposed to the conclusions of previous research, and unlike it was hypothesized in
H4, an informative packaging on a product’s attributes / benefits does not explain consumers’
IBPLB. However, this lack of relationship should lead one to interpret packaging as an
inefficient or insignificant factor in influencing consumers’ purchasing decisions. The result
only points out a correlation between the two variables. Furthermore, when looked at
separately, no significant relationship was found between SE and the other three variables.
Previous research argues that, when faced with ambiguity, consumers tend to base their
decisions on extrinsic characteristics, such as a brand name (Hoch & Ha, 1986). This
argument is plausible in the sense that ambiguity may be expected to cause an increase in
CPM. A situation, which forces the consumer to refer to the packing information to make a
brand decision, is likely to leave the consumer in ambiguity. Following the logic of Hoch
and Ha, in such a case IBPLB will be reduced and consumers will narrow down their options
to NBs only. Therefore, brand consciousness is suspected to play a covert role in the
ineffectiveness of SE in the prediction of any of the rest of the variables, including IBPLB.
However, this potential role was not investigated in this study.
Previous research revealed conflicting results about the influence of demographics as
explanatory factors of consumers’ intention to purchase private label brands. Some proved
that gender and income played determining role on IBPLB (Richardson, Jain & Dick, 1996;
Sethuraman & Cole, 1997), whereas others found that gender and age did not add to the
explanation of PLB purchasing behavior. The current research controlled to understand the
possible effects of gender, age and / or income but couldn’t find any. Neither of the three
demographics do not have any statistically significant relationship with IBPLB. In terms of
gender, male consumers (μ = 2.12) were seen to be slightly more likely to purchase PLBs
compared to females (μ = 1,9).
Finally, as evident in the mean values obtained from the survey results, the perceived
risk associated with each variable was confirmed to be changing across product categories.
Compared to the ranges in other variables, the variation in search / experience attributes
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construct was quite limited. These differences among the mean values made it possible to
group the products with respect to their risk profiles.
Managerial Implications
The study was conducted to shed some light on private label brands from the
consumers’ perspective. Moreover, it was hoped to generate some valuable insights for
retailers and manufacturers. This seemed to be especially important given the lack of
academic research on PLB in Turkey.
The results showed that perceptions on PLBs differ across product categories and vary
along with the respective levels of perceived risk. Manufacturers and retailers may be able to
use this information in order to devise a strategy for the development and rearrangement of
their product portfolios.
Furthermore, findings reveal customer purchasing mistake and quality variation to be
highly correlated with consumers’ IBPLB. This implies that retailers should seek clear and
effective ways of signaling the high quality of their products and thereby preventing the onset
of potential uncertainties. For instance, they could make investments to increase brand
awareness, and engage in strong marketing activities to enhance brand loyalty.
Future Research Directions
Considering the findings and the limitations of this research, several adaptations could
be recommended to enhance the significance and reliability of future research.
This study examined the level of perceived risk across nine different product categories.
The variation among these categories was proved to be significant. Future studies could
either analyze the relationship among other product categories with similar characteristics, or
extend the current product portfolio.
Four different consumer-level constructs were looked at as the determining factors of
IBPLB. CPM was observed to have a direct relationship with IBPLB. Furthermore, possible
indirect influence of QV through CPM was shown. Future research could look into different
factors behind the mechanisms that underlie risk perception (e.g., brand consciousness) and
find better fitting models.
In addition, it is suggested that the sample size should be increased in order to assure
the greater accuracy of the findings. Furthermore, the survey could also be conducted via
face-to-face interviews, as was commonly done in previous research. This would also allow
one to have greater control over the demographics. Although, this research did not find
income level to be an influencing factor on either one’s price consciousness or his intention
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to buy private label brands, low-income consumers and their PLB purchasing behavior are
worth investigating.
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Appendix: Scale of Research
1- Strongly disagree 5-Strongly agree
Q1. Gender
1- Male
2- Female
Q2. Age
1- <25
2- 25-30
3- 31-35
4- 36-40
5- 41-45
6- >45
Q3. Monthly income
1- <1,000 TL
2- 1,000 – 3,000 TL
3- 3,000 – 5,000 TL
4- 5,000 – 7,000 TL
5- 7,000 – 9,000 TL
6- >9,000 TL
Q4. When I choose a brand of this product category, it is not a big deal if I buy a wrong brand
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
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Q5. All brands of this are basically the same in quality
Q6. Brands of this category do not vary a lot in terms of their quality
Q7. When I buy a product of this category, it is ok if the brand is not the best quality
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
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43
Q8. For this product category, an informative package with all features helps me choose a
brand
Q9. Information on the package is enough for me when buying:
Q10. I need to have tried and tested the brand of this category in order to buy it
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
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Q11. When buying a brand of this product category, I look for the recognized brands
Q12. When buying a brand of this product category I look for the cheapest product available
Q13. When I think about my purchases of this product category during the past years, I have
purchased private label brands
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo
1 2 3 4 5
Dry pulses
Toilet paper
Cheese
Detergent
Oil
Tea
Yoghurt
Soap
Shampoo