The Use of Partial Least Squares Structural Equation Modeling in Strategic Management Research: A Review of Past Practices and Recommendations for Future Applications
Introduction
Research into the strategic management discipline recognized relatively early the potential of structural equation modeling (SEM) to empirically test theories and conceptual models. Indeed, by the late 1980s (e.g., Birkinshaw et al., 1995; Cool et al., 1989; Fornell et al., 1990; Govindarajan, 1989; Johansson and Yip, 1994), the strategic management discipline acknowledged the different and, in many research situations, advantageous properties of variance-based partial least squares SEM (PLS-SEM; Lohmöller, 1989; Wold, 1982) in comparison with the alternative covariance-based SEM (CB-SEM; Jöreskog, 1978; Jöreskog, 1982) method to estimate structural equation models. In short, CB-SEM and PLS-SEM are different but complementary statistical methods for SEM, whereby the advantages of the one method are the disadvantages of the other, and vice versa (Jöreskog and Wold, 1982).
PLS-SEM is particularly appealing when the research objective focuses on prediction and explaining the variance of key target constructs (e.g., strategic success of firms) by different explanatory constructs (e.g., sources of competitive advantage); the sample size is relatively small and/or the available data is non-normal; and, when CB-SEM provides no, or at best questionable, results (Hair et al., 2011; Hair et al., 2012; Henseler et al., 2009; Reinartz et al., 2009). Moreover, formatively measured constructs are particularly useful for explanatory constructs (e.g., sources of competitive advantage) of key target constructs, such as success (i.e., success factor studies; Albers, 2010). PLS-SEM is the preferred alternative over CB-SEM in these situations, since it enables researchers to create and estimate such models without imposing additional limiting constraints. PLS-SEM applications in strategic management often address topics such as long-term survival of firms (Agarwal et al., 2002; Cool et al., 1989); performance of global firms (Birkinshaw et al., 1998; Birkinshaw et al., 1995; Devinney et al., 2000; Johansson and Yip, 1994; Robins et al., 2002); knowledge sourcing and collaborations (Gray and Meister, 2004, Im and Rai, 2008; Jarvenpaa and Majchrzak, 2008; Purvis et al., 2001); and, cooperation of firms (Doz et al., 2000; Fornell et al., 1990; Sarkar et al., 2001).
Despite recognizing the SEM method and, more specifically, the advantageous features of PLS-SEM in existing studies, their number, as we show in this study, is considerably smaller than in other disciplines such as marketing (Hair et al., 2012) and management information systems (MIS) (Ringle et al., 2012). Researchers in management and especially strategic management seem to predominantly rely on first-generation multivariate analysis techniques (e.g., factor analysis, multiple linear regression, etc.) in their empirical studies, and thus may miss opportunities that researchers in other disciplines frequently exploit by using the second-generation SEM technique. Potential reasons may be the restrictive assumptions of the CB-SEM method (e.g., sample size requirements, data distribution, model specification) and the improper use of PLS-SEM in a few early applications (Hulland, 1999). More recent articles, however, conclude that PLS can indeed be a “silver bullet” in many research situations–if correctly applied (Hair et al., 2011).
As with other statistical methods, users can only benefit from the unique properties of PLS-SEM if they understand the principles underlying the method, apply it properly, and report the results correctly. Due to the complexities involved in using PLS-SEM, systematic assessments on how the technique has been applied in prior research can provide important guidance and, if necessary, opportunities for course correction in future applications. But despite the importance of this research question, corresponding assessments are very limited. Hulland (1999) provided an assessment of four studies in the strategic management area, showing the PLS-SEM technique had been applied with considerable variability in terms of authors appropriately handling conceptual and methodological issues.
Many disciplines frequently review the methods used to disseminate rigorous research and publication practices. While reviews of CB-SEM usage have been carried out across many disciplines in business research (e.g., Babin et al., 2008, Baumgartner and Homburg, 1996, Brannick, 1995; Garver and Mentzer, 1999; Shah and Goldstein, 2006, Shook et al., 2004, Steenkamp and Trijp, 1991), recent reviews of PLS-SEM usage cover only accounting (Lee et al., 2011), management information systems (Ringle et al., 2012), and marketing (Hair et al., 2012). Against this background, an update and extension of Hulland's (1999) case study-based assessment of PLS-SEM specific to the strategic management discipline seems timely and warranted.
Like all statistical methods, “PLS-SEM requires several choices that, if not made correctly, can lead to improper findings, interpretations, and conclusions.” (Hair et al., 2012, p. 415). The objective of this article is to provide recommendations for the use of PLS-SEM in strategic management research. For explanations of the PLS-SEM method itself, the reader is referred to recent articles (Chin, 2010; Hair et al., 2011; Henseler et al., 2012; Henseler et al., 2009) and a forthcoming text (Hair et al., 2013). Toward this aim, we review thirty-seven empirical applications of PLS-SEM in eight leading journals publishing strategic management research, and analyze these applications according to several key dimensions, including reasons for using PLS-SEM, data characteristics, model characteristics, model evaluation and reporting. We contrast the findings in strategic management research with standards applied in other disciplines. Where possible, we indicate best practices as guidelines for future applications of PLS-SEM in strategic management and suggest avenues for further research involving the technique.
Our results reveal several problematic aspects of PLS-SEM use in strategic management research, but also substantiate some improvement over time. Researchers still often do not fully utilize available analytical potential, and sometimes incorrectly apply methods in top-tier strategic management journals. For this reason, our review of PLS-SEM applications and guidelines on how to properly use the method are important to disseminate rigorous research and publication practices in the strategic management discipline.
Section snippets
Review of PLS-SEM research
Our review includes studies published in the Academy of Management Journal, Administrative Science Quarterly, Journal of Management, Journal of Management Studies, Long Range Planning, Management Science, Organization Science and Strategic Management Journal, which were selected as representative of the leading journals in management (e.g., Furrer et al., 2008; Raisch and Birkinshaw, 2008). These eight journals were searched for the 30-year period from 1981 through 2010, to identify all
Critical issues in PLS-SEM research
The thirty-seven articles included in our review were analyzed according to five key criteria previously used to evaluate critical issues and common misapplications in research involving PLS-SEM (Hair et al., 2012). The criteria used to analyze the studies and model estimations were: 1) reasons for using PLS-SEM, 2) data characteristics, 3) model characteristics, 4) model evaluation, and 5) reporting. We also distinguish between two time periods to assess whether the use of PLS-SEM has changed
Observations and conclusions
Today, our understanding of PLS-SEM is much more developed as a result of recent analyses that compare the method's properties with those of CB-SEM (e.g., Chin and Newsted's, 1999; Reinartz et al., 2009) or newly emerging techniques for estimating structural equation models (Henseler, 2012; Hwang et al., 2010; Lu et al., 2011). While the comparative studies' approaches and research aims differ, collectively they show the benefits of PLS-SEM lie in its ability to identify relationships among
Dr. Joseph F. Hair is Professor of Marketing at Coles College of Business, Kennesaw State University, USA. His research mainly focuses on multivariate analysis methods and their application in business research. E-mail: [email protected]. Please visit his webpage (http://coles.kennesaw.edu/departments_faculty/faculty-pages/Hair-JoeF.htm) for more information on Dr. Hair.
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Dr. Joseph F. Hair is Professor of Marketing at Coles College of Business, Kennesaw State University, USA. His research mainly focuses on multivariate analysis methods and their application in business research. E-mail: [email protected]. Please visit his webpage (http://coles.kennesaw.edu/departments_faculty/faculty-pages/Hair-JoeF.htm) for more information on Dr. Hair.
Dr. Marko Sarstedt is Professor of Marketing at Otto-von-Guericke-University Magdeburg and Visiting Professor at the University of Newcastle, Australia. His research interests include PLS-SEM, measurement principles, and corporate reputation. His research has been published in journals such as the Journal of the Academy of Marketing Science, Journal of Business Research, and MIS Quarterly. E-mail: [email protected]
Dr. Torsten M. Pieper is Assistant Professor at the Department of Management and Entrepreneurship, Kennesaw State University, USA. His research mainly addresses family business, strategic management, and research methods. E-mail: [email protected]. Please visit his webpage (http://coles.kennesaw.edu/departments_faculty/faculty-pages/Pieper-Torsten.htm) for more information on Dr. Pieper.
Dr. Christian M. Ringle is a Full Professor and Managing Director of the Institute for Human Resource Management and Organizations (HRMO) at Hamburg University of Technology (TUHH), Germany, and Visiting Professor at the University of Newcastle, Australia. His research mainly addresses strategic management, organizations, marketing, human resource management, and quantitative methods for business and market research. E-mail: [email protected]. Please visit http://www.tuhh.de/hrmo for more information on Dr. Ringle.