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Research Design in European Studies: The Caseof Europeanization*
THEOFANIS EXADAKTYLOSUniversity of Exeter
CLAUDIO M. RADAELLIUniversity of Exeter
Abstract
In this article, we contribute to the debate on research design and causal analysis inEuropean integration studies by considering the sub-field of Europeanization. First, weexamine the awareness of research design issues in the literature on Europeanizationthrough a review of the debate on causality, concept formation and methods. Second,we analyse how much of the discussion of the trade-offs in causal analysis inmainstream political science has percolated into Europeanization studies. We thereforeconstruct a sample of the Europeanization literature, comparing it to a control group ofhighly cited articles on European integration. This enables us to control if somepatterns are specific to the Europeanization literature or reflect a more general trend inEuropean integration. We then look at trade-offs in the Europeanization sample and inthe control group. Our findings indicate that awareness of research design is still low.Europeanization articles differ from the control group in the focus on mechanisms(rather than variables) and the qualitative aspects of time in politics. Complex notionsof causality prevail in Europeanization but not in the control group and the cause-of-effects approach is preferred to effects-of-causes in the control group but not inEuropeanization – in both cases, however, the difference is slight. We conclude byexplaining differences and similarities and make proposals for future research.
* We would like to acknowledge the support of the Jean Monnet Programme. An earlier version of thearticle was delivered to the 4th ECPR General Conference in Pisa in September 2007. We would like tothank Susan Banducci, Fabrizio De Francesco, Fabio Franchino, Oliver Fritsch, Simon Hix, ThomasPlümper, Stephen Wilks and two anonymous reviewers for their constructive comments – the usualdisclaimer applies. The full set of tables and dataset is available on the Journal’s website.
JCMS 2009 Volume 47. Number 3. pp. 507–530DOI: 10.1111/j.1468-5965.2009.00820.x
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd, 9600 Garsington Road, Oxford OX4 2DQ, UK and 350 Main Street, Malden, MA 02148,USA
Introduction
During the past decade, research on European integration has witnessed theemergence of research questions around the impact of the European Union(EU) on the domestic level, in terms of policies, institutional change andparty politics. This is nowadays the field known as Europeanization, con-cerned with ‘the institutional, strategic and normative adjustments generatedby European integration’ (EPPIE, 2007, p. 39). A strand of the European-ization literature, often tangential and connected to empirical concernsabout measurement and causality, has taken an interest in methods andresearch design. Specifically, this strand looks at issues in causal analysis.Scholars have discussed concept formation, mechanisms, the interplaybetween ideational and structural variables, and causal models, particularlythe difference between top-down recursive models and bottom-up researchdesigns.
One argument often aired at academic conferences is that Europeanizationhas potential for the normalization of European integration studies. Hassen-teufel and Surel (2000) and later a group of young scholars working under thesupervision of Palier and Surel (EPPIE, 2007, p. 45) have argued that Euro-peanization research can be the carrier of less ad hoc theorizing and moreintegration with mainstream political science. Thus, does Europeanizationprovide evidence of awareness of research design debates that feature promi-nently in ‘normal’ political science, especially comparative politics? If so,what are the methodological choices made by Europeanization scholars whenthey encounter classic trade-offs in causal analysis? And finally, is there anyoriginal contribution that Europeanization can make to the wider researchdesign debate? These are the three research questions that motivate thisarticle.
Up until now, most surveys of the field have dealt with the nature ofEuropeanization, its mechanisms and outcomes (Börzel and Risse, 2003;Caporaso, 2007; Lenschow, 2005; Olsen, 2002; Radaelli, 2003). Other reviewarticles are more concerned with issues of change in domestic institutions,actors, procedures and paradigms (Börzel, 2005; Bulmer and Radaelli, 2005;Kassim, 2005; Ladrech, 2005) or with the impact of the EU on new MemberStates or beyond Europe (Schimmelfennig, 2007; Sedelmeier, 2006).However, these studies do not address issues of research design. One excep-tion is Graziano and Vink (2007) where issues of methods are explicitlyaddressed by Markus Haverland, who has also treated case selection issues ina separate online paper (Haverland, 2005, 2007). Overall, the rare method-ological discussion in these review articles is not based on the systematicexploration of a sample of the literature – this is exactly what we set out to
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present here, drawing on Franchino’s (2005) template. The difference toFranchino is that he measures the propensity to test theories in Europeanintegration articles, whilst we look at causal analysis in Europeanizationarticles and in a control group of highly cited political science articles onEuropean integration.
As mentioned, we take a research design perspective, looking at causalanalysis – as defined by Mahoney and Goertz (2006, pp. 228–9). We start witha discussion of concept formation, causality and methods that has emergedsomewhat endogenously in the Europeanization literature in Section I. Wepresent the concept of trade-offs in causal analysis in mainstream politicalscience in Section II. We then build a sample of the Europeanization literaturein Section III and examine how it relates to some fundamental issues inresearch design and compare the findings with a second control sample drawnfrom the broader literature on the politics of European integration. The lastsection compares and concludes.
At the outset, however, we wish to clarify what we are not doing. First, weexclude from our analysis non-causal approaches. Second, we do not examinethe whole literature on Europeanization but only a sample including the mostcited pieces. The sample is limited to articles – monographs, edited volumesand individual book chapters are neglected. Third, we are limiting our analy-sis to political science research on Europeanization without crossing intoother related fields (for example, environmental studies, industrial relations,socio-legal studies and sociology).
To proceed systematically, we examine the literature by using anapproach informed by meta-analysis and systematic reviews. Meta-analysisis a form of extracting patterns in the findings of a selected set of studies.Systematic reviews are interrogations of samples of literature with a specificquestion in mind. The basic idea is to take articles as units, code the prop-erties of the units via a protocol (so that a quantitative treatment becomespossible) and then analyse the data – this is the template suggested by Lipseyand Wilson (2001). Data are analysed to investigate and describe the patternof findings in the sample (Lipsey and Wilson, 2001, pp. 73–88, 146–67).Meta-analysis cannot be performed to summarize theoretical papers, con-ventional research reviews, policy proposals and other reports of similarnature. We stick to this template, although we do not go beyond basicstatistics, given that our samples are small. In essence, our approach is asystematic review informed by the rules (of inclusion and exclusion) ofmeta-analysis. The patterns we are interested in concern research design.Before we present our systematic approach to the identification of thesepatterns, it is useful to provide information on how Europeanization scholarshave encountered issues of research design.
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I. Europeanization Research: From Concepts to Research Design
Research design issues have emerged in the context of the debate on defini-tions (Graziano and Vink, 2007; Olsen, 1995a, b; Radaelli, 2003). Definitionsbring in the question of concept formation and in turn concepts lead toresearch design decisions about measurement (Radaelli and Pasquier, 2007).
In their discussion of the concept, Börzel and Risse (2003) suggest atheoretical framework around the issue of ‘goodness of fit’ arguing that ‘thelower the compatibility between European and domestic processes, policiesand institutions, the higher the adaptational pressure’ (Börzel and Risse, 2003,p. 61). Research design – they argue – can either be organized around socialconstructivist propositions or test more rational choice arguments. Radaelli(2003) proposes a time-sensitive definition that boils down to the idea thatEuropeanization is a process, not an outcome. In terms of research design,this invites a choice for process-tracing and Piersonian notions of causality.This definition has also been used to discuss two types of research design forempirical research, called top-down and bottom-up. Let us briefly see what isat stake here.
In top-down models (Caporaso, 2007), empirical research starts from thepresence of integration, controls the level of fit/misfit of the EU-level policyvis-à-vis the Member States and then explains the presence or absence ofdomestic change. The model is recursive, that is there are no exogenousvariables. Technically, this model can be represented by a system of linearequations that are solved simultaneously. It allows for a wide range of inter-vening variables or mediating factors, as shown by Schmidt (2002). Thebottom-up research design exogenizes the EU level (Radaelli, 2003; Radaelliand Pasquier, 2007). It starts from the set of actors, ideas, problems, rules,styles and outcomes at the domestic level at time zero – in short, the policysystem at a given time. Then it process-traces the system over the years andidentifies the critical junctures or turning points – for example, when majorideational change takes place, or the constellation of dominant actors isaltered. For each juncture, the question becomes: was the cause of this majorchange domestic, or did the change come from exogenous variables like theEU-level variables or global-level variables? In order to assess the contribu-tion of the EU variables, the researcher goes ‘up’ – controlling temporalcausal sequences from the domestic level, where the major change emergesempirically, to the EU. There is a similarity with backward mapping inimplementation research – a strategy in which we start from the implemen-tation outcome and work causality backwards (Elmore, 1999 [1982]).
Within this discussion on causality and how to draw inferences fromempirical evidence, some authors have also made progress in identifying
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typologies of mechanisms (Knill and Lehmkuhl, 2002) and outcome (Héritieret al., 2001). Schmidt (2002) has made a distinction between the mechanismsinvolving structural variables and the special ways in which discourse has acausal impact on Europeanization and transforms structural variables. Dis-course can produce change ‘by altering perceptions of economic vulnerabil-ities and policy legacies and thereby enhance political institutional capacityto impose or negotiate change’ (Schmidt, 2002, pp. 899–900). This brings thewhole discussion of how to go about research design to a more sophisticatedlevel, as shown by Schmidt’s further work on discursive institutionalism(Schmidt, 2006).
Yet another stream of authors focuses on the complexity of causal chainsin the context of temporal sequences connecting major EU policies, likeeconomic and monetary union (EMU), to domestic changes (Dyson, 2000,pp. 646–7; 2002). In a carefully designed collection of case studies on EMUand domestic change, Dyson and his associates show how previous work onEMU exaggerated the influence of the EU in domestic political change(Dyson, 2002). Recent work by Stolfi (2008) demonstrates that the notion ofthe EU as an external constraint bringing about domestic change has obfus-cated the more important role of domestic policy communities. Interestingly,Stolfi uses Radaelli’s bottom-up research design to substantiate his theoreti-cal claims, thus connecting the methodological discussion with empiricalanalysis.
Finally, other authors have entered the debate on research design by usingthe notion of a control group. The question is simple: even if n EU MemberStates are experiencing change, it well may be that k countries outside the EUare also going through the same process of change – for example, becausethey are all part of a global process of diffusion (see Saurugger, 2005;Levi-Faur, 2004).
To conclude, research design issues have cropped up in this field, occa-sionally in connection with a much wider discussion on research design thathas occupied mainstream political scientists for quite a while, especially sincethe publication of Designing Social Inquiry by King, Keohane and Verba(1994). Brady and Collier’s Rethinking Social Inquiry (2004) has made thenotion of trade-offs in causal analysis quite prominent. In the next section, weshow how the trade-offs have been identified.
II. Trade-Offs in Causal Analysis
In his influential book The Comparative Method (1987), Ragin commentsthat ‘social science methodology does not concern mere technique; it
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concerns the relationship between thinking and researching’ (Ragin, 1987,p. 165). For us at least, the issue at stake in causal analysis is not qualitativeversus quantitative methods; it is a different and more essential question oftrade-offs within a ‘pluralistic vision of methodology’ (Brady et al., 2006).Trade-offs provide the benchmark for evaluation and criteria-basedapproaches (Gerring, 2001).
We identified six categories of trade-offs in causal analysis. Drawing onthe Europeanization debate reviewed in the previous section, we added aseventh category (top-down versus bottom-up design). As the seventh cat-egory is specific to Europeanization, we do not use it for the control group.The six trade-offs are:
1. ‘Cause of effects’ versus ‘effects of causes’ approach;2. concept formation versus measurement;3. complex notions of causation (including multiple-conjunctural causation)
versus singular linear causation;4. omitted variables bias versus multi-collinearity – operationalized for
the purposes of the article as a rich set of independent variables versusparsimony;
5. time as a qualitative factor in politics versus time as quantity of years; and6. mechanism-oriented research versus variable-oriented analysis.
‘Cause of effects’ versus ‘effects of causes’: Mahoney and Goertz interpretthis trade-off as a manifestation of two different research cultures, qualitativeand quantitative. According to these authors, in one case the researcher islooking for the explanation of outcomes in individual cases; in the other casethe goal is to ‘estimate the average effect of one or more causes across apopulation of cases’ (Mahoney and Goertz, 2006, p. 230). We think that thereis no reason to assume a stark contrast between qualitative and quantitativecultures – otherwise we might as well have a single trade-off between quali-tative and quantitative approaches rather than six trade-offs. Hence we use‘cause of effects’ for articles that start with a dependent variable in terms ofoutcomes – for example, constrained policy autonomy – and investigate thepossible cause, be it global economic interdependence or European integra-tion. ‘Effects of causes’ is typical of studies that are interested in trackingdown how a specific cause, such as European integration, has different effects(for example, on domestic politics and policy).
Concept formation versus measurement: The choice of research designincorporates a second goal regarding descriptive inferences – more specifi-cally regarding their generalization, simplicity and meticulousness in concep-tualization and measurement (Brady and Collier, 2004, p. 222). Central to thisgoal lies a critical trade-off between concept formation and measurement.
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One can, of course, envisage a sequence from concept formation to measure-ment in the historical development of a research field. For the individualresearcher, however, the problem is whether to prioritize concept formation orto develop measures. In turn, concept validity, if not adequately addressed, isa major source of measurement error (Mahoney and Goertz, 2006, p. 244).Conceptual stretching crops up in the Europeanization literature as well(Radaelli, 2003). Like in the previous trade-off, we do not make the ex anteassumption that qualitative researchers work on concepts and quantitativeresearchers privilege measurement. We will see later that indeed there arecases in which quantitative analysis is used to perfect a concept and cases inwhich a qualitative study is used to answer a question of measurement, withno sophisticated approach to concept formation.
Complex causation versus singular linear causation: Yet again, in ourview this is not a trade-off between qualitative and quantitative researchculture. For the purposes of our scoring, we included in complex causationnon-linear econometric models, such as structural model equations, multipleconjunctural causation, qualitative comparative analysis, equifinality, increas-ing returns, punctuated equilibria and models where the causal logic changesbefore and after a threshold level of a variable (Hall, 2003; Pierson, 2004;Ragin, 1987, 2000).
Omitted variables bias versus multi-collinearity: This is a trade-offbetween trying to reduce bias generated by neglecting some important vari-ables and bias arising out of the correlation between independent variables.The more one includes independent variables in the explanation, the higherthe likelihood of multi-collinearity problems – for example, two or moreexplanatory variables are correlated to such a degree that it is impossible toseparate their causal effects (King et al., 1994, p. 119). This issue can beaddressed by collecting additional observations to provide more leverage inthe differentiation of the causal effects (King et al., 1994, p. 123). However,according to Brady and Collier (2004, p. 48), increasing the number ofobservations ‘make[s] it harder to achieve other important goals, such asmaintaining independence of observations, measurement validity and causalhomogeneity’. As mentioned, we operationalize this trade-off as one betweenparsimony (the obvious way to avoid multi-collinearity) and rich explanation(the intuitive way to avoid omitted variables bias).
Time as quantity of years versus time as a qualitative factor: Here whatmatters is the consideration of time as a factor that can qualitatively affectpolitics. The reference is to the discussion on temporality in politics (Goetz,2006; Pierson, 1996, 2004). The trade-off is at the level of initial assumptions.Do we start from hypotheses about slow, complex causal chains of eventsthrough time, or from more basic assumptions? The choice is between
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sophisticated approaches to time that are, however, difficult to model andraise issues of periodization and simple assumptions about ‘time as number ofyears’ that are amenable to a variety of relatively complex models includinginterrupted time-series models, but without addressing the complexity of timetypical of historical-institutional analysis (for a Piersonian approach to EUpolitics see Bulmer, 2009). We operationalize this trade-off by separatingarticles that consider qualitative effects of time from articles that treat time asquantity (number of years). We also have a residual category of articles thatare a-temporal; hence they do not deal with time at all.
Mechanism-oriented versus variable-oriented design: Here the issue isone of prioritizing one or the other. A focus on variables risks downplayingthe role of mechanisms in causal analysis. On the other hand, mechanism-oriented research designs are in danger of neglecting the necessary andsufficient conditions under which these mechanisms are triggered.
Top-down versus bottom-up approach: This is only pertinent to the studyof Europeanization because it refers specifically to the orientation of theprocess itself.
III. Sample Construction and Findings
We compiled a first selection based on the Social Science Citation Index(SSCI) (search on ‘Europeani$ation’ AND ‘Politics’; period 1997–2007),from which we extracted the most frequently cited articles of the discipline.To establish whether some features are unique to the field of Europeanizationor reflect more general trends in European Studies, a control group is needed.For the control group we searched ‘European Union’ AND ‘Politics’ in thesame index for the same years. We excluded review articles, normativearticles without any empirical analysis, industrial relations articles and sta-tistical artefacts (there are a few articles with Europeanization somewhere inthe abstract but no reference to this topic). We also excluded articles wellbelow the H-index as calculated by the SSCI. This left us with 32 European-ization articles, cited at least five times (Table 1). The corresponding totalnumber for the control group was therefore set at 32 as well (Table 2).
A quick qualitative look at Tables 1 and 2 is sufficient to appreciate thediversity between the two fields. We expected several double entries (i.e. thesame article featuring in the two tables) but this is not the case (Cole andDrake is an exception). Arguably, there is an artefact component: if an authoruses Europeanization in the abstract, title or key words, he or she may notwant to use politics AND European integration as well, thinking it is redun-dant. This way his or her article will feature in one sample but not in the other.
514 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
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This may be why the top articles in the Europeanization sample do not showup in the middle of the control group table. Yet, on average, Europeanizationarticles are still several citations away from the pack of articles in the controlgroup.
The units in the Europeanization sample are disproportionately moreinterested in policy analysis (including of course regulation, transposition ofdirectives, comitology and implementation analysis), country-based case
Table 1: List of Cases in the Europeanization Sample (N = 32)
Author Journal Year Times cited
Scharpf FW JEPP 1997 39Börzel TA JCMS 1999 38Grabbe H JEPP 2001 31Benz and Eberlein JEPP 1999 29Knill and Lehmkuhl EJPR 2002 26Börzel TA JCMS 2002 21Harmsen R Governance 1999 18Marcussen; Risse;
Engelman-Martin et al.JEPP 1999 18
Lippert; Umbach; Wessels JEPP 2001 17Cole and Drake JEPP 2000 15Agh A JEPP 1999 13Bursens P Scandinavian Pol Studies 2002 13Lavenex S JCMS 2001 13Schmidt VA JEPP 2002 13Andersen MS Am Beh Scientist 2002 12Gilardi F Annals of Am Ac of Pol Soc Sci 2005 12Radaelli CM CPS 1997 12Dimitrova A WEP 2002 11Dyson K JCMS 2000 11Semetko; De Vresse; Peter J WEP 2000 11Levi-Faur D CPS 2004 10Schimmelfennig and Sedelmeier JEPP 2004 9Ladrech R Party Politics 2002 8Eyre and Lodge JEPP 2000 7Falkner G JCMS 2000 7Cole A JCMS 2001 6Warleigh A JCMS 2001 6Anderson JJ JCMS 2002 5Beyers and Trondal WEP 2004 5Fischer; Nicolet; Sciarini WEP 2002 5Lodge M WEP 2000 5Smith J PA 2001 5
Source: ISI Web of Knowledge; search terms ‘Europeani$ation’; search years 1997–2007; date of lastaccess, 1 February 2008.
RESEARCH DESIGN IN EUROPEAN STUDIES 515
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
studies and historical narratives. Control group units are much more diverse,with several articles on the substance of law-making and voting in the EUinstitutions, public opinion and identity, as well as public policy and modes ofgovernance. Another difference is that the Europeanization units tend to beclustered around a narrow group of journals. The control group refers to amore diverse set of journals. Moreover, 21 of the 32 Europeanization articleswere published in three years (2000, 2001 and 2002). The pattern for the
Table 2: List of Cases in the Control Group Sample (N = 32)
Author Journal Year Times cited
Alter KJ IO 1998 60Hix S EJPR 1999 54Hodson and Maher JCMS 2001 50Anderson CJ CPS 1998 50Taggart P EJPR 1998 48Keating M Environment and Planning C 1997 45Leitner H Political Geography 1997 43Garrett; Kelemen; Schulz IO 1998 41Pahre R Journal of Conflict Resolution 1997 35McLaren LM Journal of Politics 2002 32Tallberg J IO 2002 29Huysmans J JCMS 2000 29Gabel MJ AJPS 1998 29Carrubba CJ Journal of Politics 2001 26Schimmelfennig F EJIR 2000 25Bouwen P JEPP 2002 22Meyer C JCMS 1999 22Vogel D BJPS 2003 20Smith A Political Geography 2002 20Cichowski RA CPS 2000 18Friis and Murphy JCMS 1999 18Verdun A JEPP 1999 17Paarberg R IO 1997 16Mastenbroek E EUP 2003 15Cole and Drake JEPP 2000 15Pappi and Henning EJPR 1999 15Risse; Engelmann-Martin; Knopf et al. EJIR 1999 15Haas PM JEPP 1998 15Selck TJ Journal of Theoretical Politics 2004 14Selck and Steunenberg EUP 2004 13Spanou C JEPP 1998 13Smith ME JEPP 2000 12
Source: ISI Web of Knowledge; search terms ‘European Union’ AND ‘Politics’; search years 1997–2007;date of last access, 1 February 2008.
516 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
control group is more even. In both cases, it takes some five to six years foran article to gain a high number of citations.
We created a scorecard which included the six trade-offs, plus the trade-offspecific to Europeanization studies only for sample A. Each trade-off was splitinto three categories. If an observation was in accordance with one of the twooptions of the trade-off it was marked with the value ‘1’, otherwise it wasmarked with ‘0’. Observations that fell under the ‘not applicable’ option weremarked with a ‘-1’ value, although in the data analysis the category was notconsidered as a ‘missing case’. In terms of scoring the actual sample, uponconstruction of the survey protocol, we employed ourselves as the two codersto ensure inter-coder reliability. Inter-coder reliability may not increase thevalidity of the actual scoring in a sample size similar to ones of this exercise, butit increases transparency and congruence (Krippendorf, 2004). We scored thearticles once for a pilot exercise (to test our criteria and definitions on the road),then we refined our criteria and scored a second time, in April–May 2008.
The first question we raised in the Introduction was about the overallawareness of research design issues. When we started coding, it turned outthat most of the articles do not show awareness of the methodological trade-offs mentioned above. The Europeanization authors do not have explicitsections on research design; neither do they discuss whether they are morelikely to have a problem of multi-collinearity or a problem of omitted vari-ables bias. In consequence, we had to extrapolate the choice made by theauthors in terms of research design by carefully considering the empiricalevidence. We used the empirical analysis presented in the articles as revealedpreference of the methodological choices made by the authors. To defend thischoice, we argue that no matter how much an author is aware of a method-ological trade-off, in order to perform analysis he or she must have madesome implicit choices.
The same problem applies to the control group of European integrationarticles: it is hard to detect an interest in causal analysis and trade-offs and anacknowledgement of the methodological issues at stake in most of the papers.In this respect, Europeanization and the wider category of European integra-tion have the same features. In some cases, however, the trade-offs aregenuinely not applicable to the study in question, and are therefore assigneda value of -1.
Turning to the findings, Table 3 compares the results for the two samples.Tables 4 and 5 show the correlation between the trade-offs. Following theargument of Mahoney and Goertz that all trade-offs reflect a major fracturebetween qualitative versus quantitative, one would expect strong correlationbetween the six trade-offs (the seventh trade-off used in the Europeanizationsample is not interesting in this respect). However, this is not the case in our
RESEARCH DESIGN IN EUROPEAN STUDIES 517
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Tabl
e3:
Com
pari
ngth
eTw
oSc
orec
ards
IDSA
MP
LE
Trad
e-of
fsin
caus
alan
alys
is
12
34
56
Causeofeffects
Effectsofcauses
N/A
Concept
Measurement
N/A
Complexcausation
Singularcausation
N/A
Parsimony
Richsetofindependentvariables
N/A
Time-quantity
Time-quality
N/A
Mechanism-oriented
Variable-oriented
N/A
1E
urop
eani
zatio
n(N
=32
)16
160
923
016
124
919
412
155
1814
02
Con
trol
grou
p(N
=32
)17
141
824
014
144
1220
016
133
1217
3
Sour
ce:A
utho
rs’
own
data
.
518 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Tabl
e4:
Cor
rela
tions
Mat
rix
for
Eur
opea
niza
tion
Sam
ple
Cau
sev
effe
ctC
once
ptv
mea
sure
Com
plex
vsi
ngul
arP
arsi
mon
yv
rich
Tim
equ
ant
vqu
alM
echa
nv
vari
able
Cau
sev
effe
ctPe
arso
nco
rrel
atio
n1
.070
-.09
0.0
51-.
135
.252
Sig.
(2-t
aile
d).7
05.6
25.7
83.4
62.1
64N
3232
3232
3232
Con
cept
vm
easu
rePe
arso
nco
rrel
atio
n.0
701
.362
(*)
-.38
3(*)
.203
.412
(*)
Sig.
(2-t
aile
d).7
05.0
42.0
30.2
65.0
19N
3232
3232
3232
Com
plex
vsi
ngul
arPe
arso
nco
rrel
atio
n-.
090
.362
(*)
1.0
09-.
040
.294
Sig.
(2-t
aile
d).6
25.0
42.9
61.8
26.1
02N
3232
3232
3232
Pars
imon
yv
rich
Pear
son
corr
elat
ion
.051
-.38
3(*)
.009
1-.
298
-.18
5Si
g.(2
-tai
led)
.783
.030
.961
.098
.311
N32
3232
3232
32
Tim
equ
ant
vqu
alPe
arso
nco
rrel
atio
n-.
135
.203
-.04
0-.
298
1.0
06Si
g.(2
-tai
led)
.462
.265
.826
.098
.975
N32
3232
3232
32
Mec
han
vva
rPe
arso
nco
rrel
atio
n.2
52.4
12(*
).2
94-.
185
.006
1Si
g.(2
-tai
led)
.164
.019
.102
.311
.975
N32
3232
3232
32
Sour
ce:A
utho
rs’
calc
ulat
ions
onSP
SS.
Not
e:*
Cor
rela
tion
issi
gnifi
cant
atth
e0.
05le
vel
(2-t
aile
d).
RESEARCH DESIGN IN EUROPEAN STUDIES 519
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Tabl
e5:
Cor
rela
tions
Mat
rix
for
Con
trol
Gro
upSa
mpl
e
Cau
sev
effe
ctC
once
ptv
mea
sure
Com
plex
vsi
ngul
arP
arsi
mon
yv
rich
Tim
equ
ant
vqu
alM
echa
nism
vva
riab
le
Cau
sev
effe
ctPe
arso
nco
rrel
atio
n1
-.25
8.4
10(*
).0
00-.
128
-.49
3(**
)Si
g.(2
-tai
led)
.154
.020
1.00
0.4
85.0
04N
3232
3232
3232
Con
cept
vm
easu
rePe
arso
nco
rrel
atio
n-.
258
1-.
370(
*).2
98.0
83.2
02Si
g.(2
-tai
led)
.154
.037
.097
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N32
3232
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32
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plex
vsi
ngul
arPe
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atio
n.4
10(*
)-.
370(
*)1
.024
-.07
4-.
060
Sig.
(2-t
aile
d).0
20.0
37.8
98.6
86.7
46N
3232
3232
3232
Pars
imon
yv
rich
Pear
son
corr
elat
ion
.000
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.024
1-.
086
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Sig.
(2-t
aile
d)1.
000
.097
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.639
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N32
3232
3232
32
Tim
equ
ant
vqu
alPe
arso
nco
rrel
atio
n-.
128
.083
-.07
4-.
086
1-.
050
Sig.
(2-t
aile
d).4
85.6
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han
vva
rPe
arso
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rrel
atio
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493(
**)
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-.06
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g.(2
-tai
led)
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ce:A
utho
rs’
own
calc
ulat
ions
onSP
SS.
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es:
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orre
latio
nis
sign
ifica
ntat
the
0.05
leve
l(2
-tai
led)
;**
corr
elat
ion
issi
gnifi
cant
atth
e0.
01le
vel
(2-t
aile
d).
520 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
two samples. Tables 6 and 7 provide the more fine-grained information usedto compile the summative results of Table 3. Table 6, in particular, shows thatmost Europeanization articles are based on the top-down research design (21against five).
Let us now look at the Europeanization and the control group together(Table 3). Both samples show a balanced distribution between cause of effectsand effects of causes – the control group with a slight orientation towards theformer. Turning to the trade-off between concept and measurement, weexpected to find Europeanization articles more interested in developing theconcept rather than measurement and the opposite for the control group. Thisis because the field of Europeanization is relatively new. Hence – we reasoned– researchers spend more time in discussing their concepts. In addition, thereview articles on Europeanization (Lenschow, 2005; Olsen, 2002; Radaelli,2003) suggest that definitional issues and concept formation have been some-what prominent. The sample, by contrast, seems to suggest that there is apreference for measurement. This characteristic features also in the controlgroup.
On the type of causation (Table 3: column 3), yet again the two samples donot show much difference, although Europeanization articles have a slightpreference for complex notions of causation. This is arguably the result of afield that was literally created around a causation puzzle: how can one grasp theessence of the Europeanization process if there are multiple feedback loopsbetween domestic and EU variables in this process? Unsurprisingly, research-ers are working with complex notions of causation in this area. Singularcausation is preferred by those who think of Europeanization as implementa-tion of EU decisions – for these authors causation is more straightforward.
Both Europeanization and control group units prefer a rich set of explana-tory variables to parsimony (Table 3: column 4). Regarding time (Table 3:column 5) the Europeanization sample deals with the qualitative aspects ofthis variable more than the control group. The (relatively small) differencecan be explained by noting that several articles on Europeanization are basedon policy analysis, longitudinal case studies and/or process tracing. Since theEuropeanization scholars have spent much time discussing how exactly thisprocess works, there is a major emphasis on mechanisms that we do not findin the control group (Table 3: column 6).
Conclusion
In this article, we have examined the field of Europeanization by looking attrade-offs in causal analysis. Previous work has been more interested in either
RESEARCH DESIGN IN EUROPEAN STUDIES 521
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Tabl
e6:
Scor
ecar
dof
the
Eur
opea
niza
tion
Sam
ple
IDA
utho
r(y
ear)
Trad
e-of
fsin
caus
alan
alys
is
12
34
56
7
Causeofeffects
Effectsofcauses
N/A
Concept
Measurement
N/A
Top-down
Bottom-up
N/A
Complexcausation
Singularcausation
N/A
Parsimony
Richsetofindepvar.
N/A
Time-quantity
TimeQuality
N/A
Mech-orient
Var-orient
N/A
1Á
gh20
020
10
01
01
00
01
00
10
10
00
10
2A
nder
sen
2002
01
00
10
10
00
10
01
01
00
01
03
And
erso
nJJ
2002
01
00
10
10
00
10
01
00
10
01
04
Ben
zan
dE
berl
ein
1999
10
00
10
10
01
00
01
01
00
01
05
Bey
ers
and
Tro
ndal
2004
10
00
10
01
00
10
10
00
0-1
10
06
Bör
zel
1999
01
01
00
10
01
00
01
01
00
10
07
Bör
zel
2002
10
01
00
10
00
0-1
00
-11
00
10
08
Bur
sens
2002
10
00
10
10
01
00
01
01
00
10
09
Col
e20
011
00
01
01
00
01
01
00
01
01
00
10C
ole
and
Dra
ke20
000
10
10
00
10
10
00
10
01
00
10
11D
imitr
ova
2002
01
00
10
10
00
10
01
00
0-1
01
012
Dys
on20
000
10
01
01
00
00
-10
0-1
01
01
00
13E
yre
and
Lod
ge20
000
10
01
01
00
10
01
00
00
-11
00
14Fa
lkne
r0
10
01
01
00
10
00
10
01
01
00
15Fi
sche
r;N
icol
et;
Scia
rini
2002
01
00
10
10
00
10
10
01
00
01
0
522 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
16G
ilard
i20
051
00
01
00
0-1
01
01
00
01
01
00
17G
rabb
e20
010
10
10
01
00
10
00
10
10
01
00
18H
arm
sen
1999
10
00
10
10
00
0-1
01
01
00
01
019
Kni
llan
dL
ehm
kuhl
2002
10
01
00
10
01
00
00
-10
10
10
020
Lad
rech
2002
10
01
00
00
-11
00
01
00
10
10
021
Lav
enex
2001
10
00
10
01
00
0-1
01
00
10
01
022
Lev
i-Fa
ur20
040
10
01
00
0-1
01
01
00
10
00
10
23L
ippe
rt,U
mba
ch,W
esse
ls20
011
00
10
01
00
10
01
00
01
01
00
24L
odge
2000
01
01
00
00
-11
00
00
-11
00
10
025
Mar
cuss
en,R
isse
etal
.199
91
00
01
00
10
01
01
00
01
00
10
26R
adae
lli19
971
00
01
00
10
01
00
10
01
01
00
27Sc
harp
f19
970
10
01
00
0-1
10
00
10
10
01
00
28Sc
him
mel
fenn
igan
dSe
delm
eier
2004
10
00
10
10
01
00
01
00
10
10
029
Schm
idt
2002
10
01
00
10
01
00
01
00
10
10
030
Sem
etko
;D
eV
rees
e;Pe
ter
J20
000
10
01
01
00
10
00
10
01
00
10
31Sm
ithJ
2001
01
00
10
10
00
10
10
00
0-1
01
032
War
leig
hA
2001
10
00
10
00
-11
00
01
00
0-1
01
0T
OTA
LO
BSE
RV
AT
ION
S(N
=32
)16
160
923
021
56
1612
49
194
1215
518
140
Sour
ce:A
utho
rs’
own
data
.
RESEARCH DESIGN IN EUROPEAN STUDIES 523
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Tabl
e7:
Scor
ecar
dof
the
Con
trol
Gro
upSa
mpl
e
IDA
utho
r(y
ear)
Trad
e-of
fsin
caus
alan
alys
is
12
45
67
Causeofeffects
Effectsofcauses
N/A
Concept
Measurement
N/A
Complexcausation
Singularcausation
N/A
Parsimony
Richsetofindepvariables
N/A
Time-quantity
Time-quality
N/A
Mechanism-oriented
Variable-oriented
N/A
1A
lter
1998
01
00
10
10
00
10
10
01
00
2A
nder
son
CJ
1998
01
00
10
01
00
10
10
00
10
3B
oyle
2000
10
00
10
10
00
10
01
01
00
4C
arru
bba
2001
10
00
10
01
00
10
10
00
10
5C
icho
wsk
i20
001
00
01
01
00
01
01
00
01
06
Col
ean
dD
rake
2000
01
01
00
10
00
10
01
00
10
7Fr
iisan
dM
urph
y19
990
10
01
01
00
01
00
10
10
08
Gab
el19
981
00
01
00
10
01
01
00
01
09
Gar
rett,
Kel
emen
,Sch
ulz
1998
10
01
00
01
01
00
01
01
00
10H
aas
PM19
981
00
01
01
00
01
01
00
01
011
Hix
1999
10
00
10
10
00
10
10
00
10
12H
odso
nan
dM
aher
2001
01
01
00
01
01
00
10
01
00
13H
uysm
ans
2000
01
00
10
10
01
00
10
01
00
524 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
14K
eatin
g19
970
10
01
00
0-1
01
00
10
01
015
Lei
tner
1997
10
00
10
10
00
10
01
00
10
16M
aste
nbro
ek20
030
10
01
00
10
01
00
10
01
017
McL
aren
LM
2002
10
00
10
01
00
10
00
-10
10
18M
eyer
C19
991
00
01
00
10
10
01
00
01
019
Paar
lber
g19
971
00
01
01
00
10
00
10
01
020
Pahr
e19
970
10
01
00
10
01
01
00
10
021
Papp
ian
dH
enni
ng19
991
00
01
00
10
01
00
0-1
01
022
Ris
se,E
ngel
man
n-M
artin
,eta
l.19
990
10
01
01
00
10
00
10
01
023
Schi
mm
elfe
nnig
2000
10
01
00
10
01
00
01
01
00
24Se
lck
2004
01
01
00
00
-10
10
10
00
10
25Se
lck
and
Steu
nenb
erg
2004
01
00
10
01
01
00
00
-11
00
26Sm
ithA
2002
10
00
10
10
00
10
01
00
0-1
27Sm
ithM
E20
000
10
10
00
0-1
10
00
10
10
028
Span
ou19
980
10
01
00
10
10
01
00
10
029
Tagg
art
1998
10
00
10
01
00
10
10
00
0-1
30Ta
llber
g20
020
0-1
10
00
0-1
01
01
00
10
031
Ver
dun
1999
10
01
00
01
01
00
10
00
0-1
32V
ogel
2003
10
00
10
10
01
00
01
00
10
TO
TAL
OB
SER
VA
TIO
NS
(N=
32)
1714
18
240
1414
412
200
1613
312
173
Sour
ce:A
utho
rs’
own
data
.
RESEARCH DESIGN IN EUROPEAN STUDIES 525
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
discussing outcomes (that is, whether country A is Europeanized or not) orissues of research design at a fairly general level. Surveys of the literaturehave not used basic quantitative tools such as meta-analysis and systematicreviews. With this article, instead, we provide a synthetic overview of whatgoes on in the field in terms of trade-offs in causal analysis.
We addressed three issues: what is the level of awareness of researchdesign in Europeanization? What are the methodological choices made by thescholars in this field? And finally, is there any original contribution thatEuropeanization can make to the research design debate?
Awareness of research design issues is still low in the field of European-ization. As coders, one of our major problems was to find out just how anauthor had gone about the trade-offs, since in most cases awareness of thistype of choice was not evident. Hence in most cases we had to infer thechoices made by the author in terms of causal analysis from the substantivesections of the article.
Europeanization scholars do not systematically prefer cause-of-effectsanalysis to effects-of-causes. Measurement features more prominently thanconceptual development. Complex notions of causality prevail in European-ization but not in the control group – the difference, however, is slight. On thetrade-off between parsimony and rich set of variables, Europeanization schol-ars go for the latter. They are also engaged with time making qualitativeimpacts on politics and public policy. Finally, the design shows slightpreference for mechanism-oriented analysis.
To what extent are these features unique to Europeanization? Or do theyreflect general patterns in the study of EU politics? Europeanization articlesdiffer from the control group in the focus on mechanisms (rather than vari-ables) and the qualitative aspects of time in politics. Complex notions ofcausality prevail in Europeanization but not in the control group and thecause-of-effects approach is preferred to effects-of-causes in the controlgroup but not in Europeanization – in both cases, however, the difference isslight.
The methodological discussions within Europeanization have generated afew innovative ideas, such as the insights on mechanisms through whichcausality works; how to measure the net impact by looking at control groupsand test cases from outside the EU; and the notion of bottom-up researchdesign. However, the vast majority of scholars work with rather standardtop-down designs.
Future work will have to establish if the trade-offs are independent or ifsome of them are correlated. Our analysis suggests that they are not correlatedand do not represent manifestations of a more fundamental fracture betweenquantitative methods and qualitative approaches.
526 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
© 2009 The Author(s)Journal compilation © 2009 Blackwell Publishing Ltd
Correspondence:Theofanis Exadaktylos and Claudio M. RadaelliDepartment of PoliticsAmory BuildingRennes DriveUniversity of ExeterEX4 4RJ, UKTel + 44 (0) 1392 263176Fax + 44 (0) 1392 263305email [email protected]; [email protected]
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Supporting Information
Additional Supporting Information may be found in the online version of thisarticle:
Table S1. List of most cited articles on Europeanization (cut-off point at 5citations)Table S2. List of most cited articles on European Union and Politics (cut-offpoint at 12 citations)
RESEARCH DESIGN IN EUROPEAN STUDIES 529
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Table S3. List of cases in the Europeanization Sample (N = 32)Table S4. List of cases in the Control Group sample (N = 32)Table S5. Comparative table of the two scorecardsTable S6. Correlations matrix for Europeanization sampleTable S7. Scorecard of the Europeanization sampleTable S8. Scorecard of the Control Group sample
Please note: Wiley-Blackwell are not responsible for the content or function-ality of any supporting materials supplied by the authors. Any queries (otherthan missing material) should be directed to the corresponding authors for thearticle.
530 THEOFANIS EXADAKTYLOS AND CLAUDIO M. RADAELLI
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