Diversity in the Executive Suite: A Longitudinal Examination of the Antecedents and Consequences of Top Management Team Heterogeneity by Jason Douglas DeBode A dissertation submitted to the Graduate Faculty of Auburn University in partial fulfillment of the requirements for the Degree of Doctor of Philosophy Auburn, Alabama August 2, 2014 Keywords: Top Management Teams, Chief Executive Officer, Managerial Power, Managerial Discretion, Strategic Leadership, Longitudinal Copyright 2014 by Jason Douglas DeBode Approved by Garry L. Adams, Co-chair, Associate Professor of Strategic Management Kevin W. Mossholder, Co-chair, Professor of Management L. Allison Jones-Farmer, Associate Professor of Statistics and Business Analytics LaKami T. Baker, Assistant Professor of Management Abstract This dissertation takes an evolutionary approach toward Top Management Team (TMT) heterogeneity by examining its antecedents (i.e., CEO characteristics) and outcomes (i.e., firm performance, TMT turnover) as well as several boundary conditions of these relationships (i.e., TMT discretion, TMT power distribution). Four primary research questions are explored in detail, including 1) In what ways are a CEO’s characteristics related to TMT heterogeneity?; 2) What is the nature of the relationship between TMT heterogeneity, firm performance, and TMT turnover?; 3) What are the temporal dynamics of these relationships?; and 4) How do TMT power and discretion influence the relationships between TMT heterogeneity, firm performance, and turnover? The primary goal of this study was to better understand how TMT heterogeneity manifests in organizations and the influence it has on different outcomes of interest to firms. Emanating from the strategic leadership literature, the Upper Echelons perspective served as the primary theoretical framework in this study. Additional theories from the strategic management and social psychology literatures were incorporated to gain a greater understanding of the modeled relationships as well as how they unfold over time. Using latent growth modeling and multiple regression analyses, this study examined the above phenomena among a sample of firms on the Fortune 1000 list from 2002 through 2012. The results highlight the complicated associations between executive diversity, firm performance, and executive turnover over time. Specifically, most ii diversity types had a short-lived influence on performance, though TMT Race Diversity emerged as having a persistent and nonlinear relation. Additionally, certain diversity types were associated with gains in financial performance, though only when combined with certain levels of specific moderators. Ultimately, this study finds support for the influence of CEOs on TMT diversity, the Upper Echelons perspective, and, perhaps most importantly, the benefits of opening the ‘black box’ in organizational demography research. iii Acknowledgements An African proverb holds that it takes a village to raise a child, and so it is with doctoral students. There are many people who have contributed to my development as a scholar and progression through my doctoral program, many of whom I would like to thank here. First is my dissertation committee. Dr. Garry Adams has challenged and supported me since I first showed him what would become my dissertation model. His encouragement, reassurance, and humor have helped in ways difficult for me to express and for that I am forever grateful. On a different note, the various ways he contributes to our doctoral program have helped with my teaching, research, service, and navigating the job search process; this help has been invaluable. Dr. Kevin Mossholder has served as a guiding influence in my comprehensive papers and dissertation. His help honing my research skills and constant reminders to focus on the theory and practical implications of my research have greatly contributed to my development as a researcher and for that I am thankful. Dr. Allison Jones-Farmer has entertained and enabled my interest in statistical methods since my earliest days in her classes. Her support throughout the doctoral program – both professionally and personally – has helped make my doctoral education proceed far more smoothly than it otherwise would have. Dr. LaKami Baker and Dr. Andy McLelland have been more recent additions to my research cohort, but your helpful insights along with the generous gifts of your time and effort on my dissertation are most appreciated. iv Beyond my committee members, my thanks and appreciation go out to the entire faculty of the Management Department at Auburn University. Several faculty members have been especially influential in my progression through the doctoral program. Dr. Alan Walker, Dr. Achilles Armenakis, and Dr. Junior Feild have worked with me since my beginning days in the program and I am grateful for your guidance. Ms. Nancy Ray- Monroe and Ms. Barbara Hawkins have been helpful with the endless administrative details associated with the doctoral program, research, and teaching; your help is appreciated more than I can say. Additional thanks go out to the mentors who guided me through earlier stages of my academic career. Dr. Bob Blodgett, Dr. Nora Reilly, and Dr. Sean Robson were all integral to my success in and progression through my bachelors and masters programs. Without their help I would likely have ended up on a very different career path, and I am grateful for your guidance and friendship over the past several years. My colleagues in the doctoral program, both those who went before me and those who come after, have played an important role in my development as an academician. Whether focused on research, teaching, or more personal matters, our conversations helped me to develop and gain an appreciation for other domains and perspectives and I value each relationship made during my time in the doctoral program. On a more personal note, my endless gratitude goes out to my parents, Doug and Sandy DeBode and my in-laws Kevin and Tammy Neubauer for their love, support, and encouragement. My thanks also go to my brothers, Chris and Brad, and to my brother- and sisters-in-law Seth, Taylor, and Shelby for the many ways they have supported my family during our time in Auburn. v Lastly my eternal love and thanks go to my wife, Tasha. You have helped me endure the most difficult days and celebrate the best. Without your patience, support, encouragement, and love this experience would not have been possible. The sacrifices you made to help turn my ambitions into reality have not gone unnoticed. You are my rock and I look forward to what the future has in store for us. vi Table of Contents Abstract ............................................................................................................................... ii List of Tables ..................................................................................................................... xi List of Figures .................................................................................................................. xiii List of Abbreviations ........................................................................................................ xv Chapter 1 ............................................................................................................................. 1 Section 1.1: Introduction ................................................................................................. 1 Section 1.2: Research Questions ................................................................................... 10 Section 1.3: Research Model, Theories, and Constructs ............................................... 12 Section 1.3.1: Research Models. ............................................................................... 12 Section 1.3.2: Model Relationships. .......................................................................... 13 Section 1.3.2.1: CEO Characteristics TMT Heterogeneity. ................................. 13 Section 1.3.2.2: TMT Heterogeneity Performance. .............................................. 13 Section 1.3.2.3: TMT Heterogeneity TMT Turnover ........................................... 14 Section 1.3.2.4: The moderating roles of TMT Power Distribution and TMT Discretion................................................................................................................... 14 Section 1.4: Dissertation Contributions ........................................................................ 14 Section 1.5: Dissertation Outline .................................................................................. 18 Chapter 2 ........................................................................................................................... 19 Section 2.1: Primary Theories ....................................................................................... 19 vii Section 2.1.1: The Upper Echelons Perspective. ....................................................... 19 Section 2.1.2: Top Management Team Power. ......................................................... 37 Section 2.2: Dissertation Constructs ............................................................................. 56 Section 2.2.1: Chief Executive Officer Characteristics ............................................. 56 Section 2.2.2: Chief Executive Officer Power .......................................................... 63 Section 2.2.3: Top Management Team Discretion .................................................... 66 Section 2.2.4: Top Management Team Power Distribution ...................................... 68 Section 2.2.6: Top Management Team Turnover ...................................................... 72 Chapter 3 ........................................................................................................................... 76 Section 3.1: Dissertation Hypotheses ............................................................................ 76 Section 3.2: On the Use of Time – Theoretical Concerns ........................................... 104 Section 3.3: Dissertation Model with Hypotheses Labeled ........................................ 110 Chapter 4 ......................................................................................................................... 111 Section 4.1: On the Use of Time – Methodological Concerns .................................... 111 Section 4.2: Study Design and Research Strategy. ..................................................... 112 Section 4.3: Dissertation Variables and Measures ...................................................... 113 Section 4.3.1: CEO Characteristics ......................................................................... 113 Section 4.3.3: TMT Discretion ................................................................................ 114 Section 4.3.4: TMT Power Distribution .................................................................. 115 Section 4.3.5: Firm Performance ............................................................................. 119 Section 4.3.6: TMT Turnover .................................................................................. 119 Section 4.3.7: Control Variables.............................................................................. 120 Section 4.4: Dissertation Methodology and Statistical Analyses ................................ 121 viii Section 4.5: Dissertation Model with Data Collection Years Labeled ....................... 127 Chapter 5 ......................................................................................................................... 128 Section 5.1: Descriptive Statistics ............................................................................... 128 Section 5.1.1: Variable Adjustments ....................................................................... 128 Section 5.2: Unconditional Growth Models ................................................................ 129 Section 5.3: Conditional Growth Models .................................................................... 135 Section 5.3.1: Model Results: ROA with 2003 Heterogeneity................................ 136 Section 5.3.2: Model Results: ROS with 2003 Heterogeneity ................................ 143 Section 5.3.3: Model Results: ROA with 2004 Heterogeneity................................ 145 Section 5.3.4: Model Results: ROS with 2004 Heterogeneity ................................ 165 Section 5.4: Multiple Regression Models ................................................................... 179 Section 5.4.1: Model Results: Turnover with 2003 Heterogeneity ......................... 179 Section 5.4.2: Model Results: Turnover with 2004 Heterogeneity ......................... 180 Section 5.4.3: Nonlinear Heterogeneity effects on Turnover .................................. 182 Section 5.5: Post Hoc Analyses ................................................................................... 187 Section 5.6: Summary of Results ................................................................................ 188 Section 5.6.1: Overview of Hypothesis Support ..................................................... 190 Chapter 6 ......................................................................................................................... 196 Section 6.1: Dissertation Limitations .......................................................................... 196 Section 6.2: Discussion of Dissertation Results and Future Research ........................ 199 Section 6.2.1: Discussion of Dissertation Results and Study Contributions ........... 199 Section 6.2.2: Future Research Agenda................................................................... 209 Section 6.3: Lessons Learned ...................................................................................... 211 ix Section 6.4: Conclusion ............................................................................................... 213 References ....................................................................................................................... 215 x
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