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Female Leadership and Financial Performance: A Meta-Analysis

Author

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  • Katarina Gomoryova

    (Charles University, Prague, Czech Republic)

Abstract

Is female leadership the secret ingredient to financial prosperity? This question has been the subject of extensive research, yet the findings remain inconclusive. We aim to provide a comprehensive understanding of this relationship employing contemporary techniques on the up-to-date dataset comprising 1,131 estimates gathered from 96 distinct studies. We address the pervasive issue of publication bias resulting in the mild preference for positive outcomes. After filtering out this bias, the study finds a negligible mean effect estimate, suggesting that the impact of women in leadership on financial performance is minimal. We further explore the potential factors that could account for variations in the estimated effects across different studies. Utilising Bayesian Model Averaging, weighted by the inverse number of estimates, we identify thirteen significant moderators that influence the relationship under study. Among these, the proportion of female authors, the impact factor of the journal, the duality of the CEO role, and the tenure of leaders are found to exert the most positive influence on the effect. Conversely, the age of leaders pushes effect the most in the opposite direction. Other influential factors include the publication status of the article, the number of variables used in the study, publication bias, the use of random estimation and matching approaches, the use of accounting-based financial measures, focus on the emerging market, and the representation of the leadership variable as a proportion.

Suggested Citation

  • Katarina Gomoryova, 2024. "Female Leadership and Financial Performance: A Meta-Analysis," Working Papers IES 2024/6, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, revised Jan 2024.
  • Handle: RePEc:fau:wpaper:wp2024_06
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    1. Christian Zimmermann, 2013. "Academic Rankings with RePEc," Econometrics, MDPI, vol. 1(3), pages 1-32, December.
    2. Havranek, Tomas & Rusnak, Marek & Sokolova, Anna, 2017. "Habit formation in consumption: A meta-analysis," European Economic Review, Elsevier, vol. 95(C), pages 142-167.
    3. John P. A. Ioannidis & T. D. Stanley & Hristos Doucouliagos, 2017. "The Power of Bias in Economics Research," Economic Journal, Royal Economic Society, vol. 127(605), pages 236-265, October.
    4. Geeta Duppati & Narendar V. Rao & Neha Matlani & Frank Scrimgeour & Debasis Patnaik, 2020. "Gender diversity and firm performance: evidence from India and Singapore," Applied Economics, Taylor & Francis Journals, vol. 52(14), pages 1553-1565, March.
    5. Adams, Renée B. & Ferreira, Daniel, 2009. "Women in the boardroom and their impact on governance and performance," Journal of Financial Economics, Elsevier, vol. 94(2), pages 291-309, November.
    6. Ali Uyar & Cemil Kuzey & Merve Kilic & Abdullah S. Karaman, 2021. "Board structure, financial performance, corporate social responsibility performance, CSR committee, and CEO duality: Disentangling the connection in healthcare," Corporate Social Responsibility and Environmental Management, John Wiley & Sons, vol. 28(6), pages 1730-1748, November.
    7. Jan Luca Pletzer & Romina Nikolova & Karina Karolina Kedzior & Sven Constantin Voelpel, 2015. "Does Gender Matter? Female Representation on Corporate Boards and Firm Financial Performance - A Meta-Analysis," PLOS ONE, Public Library of Science, vol. 10(6), pages 1-20, June.
    8. Atif, Muhammad & Hossain, Mohammed & Alam, Md Samsul & Goergen, Marc, 2021. "Does board gender diversity affect renewable energy consumption?," Journal of Corporate Finance, Elsevier, vol. 66(C).
    9. Ian Gregory‐Smith & Brian G.M. Main & Charles A. O'Reilly III, 2014. "Appointments, Pay and Performance in UK Boardrooms by Gender," Economic Journal, Royal Economic Society, vol. 124(574), pages 109-128, February.
    10. Kevin Campbell & Antonio Mínguez-Vera, 2008. "Gender Diversity in the Boardroom and Firm Financial Performance," Journal of Business Ethics, Springer, vol. 83(3), pages 435-451, December.
    11. Tomas Havranek & Zuzana Irsova & Lubica Laslopova & Olesia Zeynalova, 2020. "Skilled and Unskilled Labor Are Less Substitutable than Commonly Thought," Working Papers IES 2020/29, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, revised Sep 2020.
    12. Mersland, Roy & Øystein Strøm, R., 2009. "Performance and governance in microfinance institutions," Journal of Banking & Finance, Elsevier, vol. 33(4), pages 662-669, April.
    13. Isabelle Solal & Kaisa Snellman, 2019. "Women Don’t Mean Business? Gender Penalty in Board Composition," Organization Science, INFORMS, vol. 30(6), pages 1270-1288, November.
    14. Larcker, David F. & Rusticus, Tjomme O., 2010. "On the use of instrumental variables in accounting research," Journal of Accounting and Economics, Elsevier, vol. 49(3), pages 186-205, April.
    15. Enrique Moral-Benito, 2012. "Determinants of Economic Growth: A Bayesian Panel Data Approach," The Review of Economics and Statistics, MIT Press, vol. 94(2), pages 566-579, May.
    16. Liliana Nicoleta Simionescu & Ştefan Cristian Gherghina & Hiba Tawil & Ziad Sheikha, 2021. "Does board gender diversity affect firm performance? Empirical evidence from Standard & Poor’s 500 Information Technology Sector," Financial Innovation, Springer;Southwestern University of Finance and Economics, vol. 7(1), pages 1-45, December.
    17. Havranek, Tomas & Irsova, Zuzana & Laslopova, Lubica & Zeynalova, Olesia, 2020. "The Elasticity of Substitution between Skilled and Unskilled Labor: A Meta-Analysis," MPRA Paper 102598, University Library of Munich, Germany.
    18. Jindrich Matousek & Tomas Havranek & Zuzana Irsova, 2022. "Individual discount rates: a meta-analysis of experimental evidence," Experimental Economics, Springer;Economic Science Association, vol. 25(1), pages 318-358, February.
    19. Strøm, Reidar Øystein & D’Espallier, Bert & Mersland, Roy, 2014. "Female leadership, performance, and governance in microfinance institutions," Journal of Banking & Finance, Elsevier, vol. 42(C), pages 60-75.
    20. Helena Isidro & Márcia Sobral, 2015. "The Effects of Women on Corporate Boards on Firm Value, Financial Performance, and Ethical and Social Compliance," Journal of Business Ethics, Springer, vol. 132(1), pages 1-19, November.
    21. Sebastian Gechert & Tomas Havranek & Zuzana Irsova & Dominika Kolcunova, 2022. "Measuring Capital-Labor Substitution: The Importance of Method Choices and Publication Bias," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 45, pages 55-82, July.
    22. Gull, Ammar Ali & Nekhili, Mehdi & Nagati, Haithem & Chtioui, Tawhid, 2018. "Beyond gender diversity: How specific attributes of female directors affect earnings management," The British Accounting Review, Elsevier, vol. 50(3), pages 255-274.
    23. Sebastian Gechert & Tomas Havranek & Zuzana Irsova & Dominika Kolcunova, 2022. "Measuring Capital-Labor Substitution: The Importance of Method Choices and Publication Bias," Review of Economic Dynamics, Elsevier for the Society for Economic Dynamics, vol. 45, pages 55-82, July.
    24. Sanjukta Brahma & Chioma Nwafor & Agyenim Boateng, 2021. "Board gender diversity and firm performance: The UK evidence," International Journal of Finance & Economics, John Wiley & Sons, Ltd., vol. 26(4), pages 5704-5719, October.
    25. Galbreath, Jeremy, 2011. "Are there gender-related influences on corporate sustainability? A study of women on boards of directors," Journal of Management & Organization, Cambridge University Press, vol. 17(1), pages 17-38, January.
    26. Fernando, Guy D. & Jain, Shalini Sarin & Tripathy, Arindam, 2020. "This cloud has a silver lining: Gender diversity, managerial ability, and firm performance," Journal of Business Research, Elsevier, vol. 117(C), pages 484-496.
    27. Angelo A. Unite & Michael J. Sullivan & Ailyn A. Shi, 2019. "Board Diversity and Performance of Philippine Firms: Do Women Matter?," International Advances in Economic Research, Springer;International Atlantic Economic Society, vol. 25(1), pages 65-78, February.
    28. Doucouliagos, Hristos (Chris), 2011. "How large is large? Preliminary and relative guidelines for interpreting partial correlations in economics," Working Papers eco_2011_5, Deakin University, Department of Economics.
    29. Gang Wang & Kaitlyn DeGhetto & B. Parker Ellen & Bruce T. Lamont, 2019. "Board Antecedents of CEO Duality and the Moderating Role of Country‐level Managerial Discretion: A Meta‐analytic Investigation," Journal of Management Studies, Wiley Blackwell, vol. 56(1), pages 172-202, January.
    30. Ahmed Zemzem & Oumeima Kacem, 2014. "Risk Management, Board Characteristics and Performance in the Tunisian Lending Institutions," International Journal of Finance & Banking Studies, Center for the Strategic Studies in Business and Finance, vol. 3(1), pages 186-200, January.
    31. Aruoriwo Marian Chijoke-Mgbame & Agyenim Boateng & Chijoke Oscar Mgbame, 2020. "Board gender diversity, audit committee and financial performance: evidence from Nigeria," Accounting Forum, Taylor & Francis Journals, vol. 44(3), pages 262-286, July.
    32. Kevin Campbell & Antonio Minguez Vera, 2010. "Female board appointments and firm valuation: short and long-term effects," Journal of Management & Governance, Springer;Accademia Italiana di Economia Aziendale (AIDEA), vol. 14(1), pages 37-59, February.
    33. Isaiah Andrews & Maximilian Kasy, 2019. "Identification of and Correction for Publication Bias," American Economic Review, American Economic Association, vol. 109(8), pages 2766-2794, August.
    34. repec:hal:journl:hal-02312045 is not listed on IDEAS
    35. Jonathan A.C. Sterne & Roger M. Harbord, 2004. "Funnel plots in meta-analysis," Stata Journal, StataCorp LP, vol. 4(2), pages 127-141, June.
    36. Belaounia, Samia & Tao, Ran & Zhao, Hong, 2020. "Gender equality's impact on female directors’ efficacy: A multi-country study," International Business Review, Elsevier, vol. 29(5).
    37. Tomas Havranek & Zuzana Irsova & Tomas Vlach, 2018. "Measuring the Income Elasticity of Water Demand: The Importance of Publication and Endogeneity Biases," Land Economics, University of Wisconsin Press, vol. 94(2), pages 259-283.
    38. Diana Zigraiova & Tomas Havranek, 2016. "Bank Competition And Financial Stability: Much Ado About Nothing?," Journal of Economic Surveys, Wiley Blackwell, vol. 30(5), pages 944-981, December.
    39. Gerber, Alan & Malhotra, Neil, 2008. "Do Statistical Reporting Standards Affect What Is Published? Publication Bias in Two Leading Political Science Journals," Quarterly Journal of Political Science, now publishers, vol. 3(3), pages 313-326, October.
    40. Stanley, T. D. & Jarrell, Stephen B. & Doucouliagos, Hristos, 2010. "Could It Be Better to Discard 90% of the Data? A Statistical Paradox," The American Statistician, American Statistical Association, vol. 64(1), pages 70-77.
    41. Zeugner, Stefan & Feldkircher, Martin, 2015. "Bayesian Model Averaging Employing Fixed and Flexible Priors: The BMS Package for R," Journal of Statistical Software, Foundation for Open Access Statistics, vol. 68(i04).
    42. Thi-Hanh Vu & Van-Duy Nguyen & Manh-Tung Ho & Quan-Hoang Vuong, 2019. "Determinants of Vietnamese Listed Firm Performance: Competition, Wage, CEO, Firm Size, Age, and International Trade," JRFM, MDPI, vol. 12(2), pages 1-19, April.
    43. Fitriya Fauzi & Stuart Locke, 2012. "Board Structure, Ownership Structure and Firm Performance: A Study of New Zealand Listed-Firms," Asian Academy of Management Journal of Accounting and Finance (AAMJAF), Penerbit Universiti Sains Malaysia, vol. 8(2), pages 43-67.
    44. Liu, Yonghong & Lei, Lijun & Buttner, E. Holly, 2020. "Establishing the boundary conditions for female board directors’ influence on firm performance through CSR," Journal of Business Research, Elsevier, vol. 121(C), pages 112-120.
    45. Chadwick, Ingrid C. & Dawson, Alexandra, 2018. "Women leaders and firm performance in family businesses: An examination of financial and nonfinancial outcomes," Journal of Family Business Strategy, Elsevier, vol. 9(4), pages 238-249.
    46. Cazachevici, Alina & Havranek, Tomas & Horvath, Roman, 2020. "Remittances and economic growth: A meta-analysis," World Development, Elsevier, vol. 134(C).
    47. Alicia Girón & Amirreza Kazemikhasragh & Antonella Francesca Cicchiello & Eva Panetti, 2021. "Sustainability Reporting and Firms’ Economic Performance: Evidence from Asia and Africa," Journal of the Knowledge Economy, Springer;Portland International Center for Management of Engineering and Technology (PICMET), vol. 12(4), pages 1741-1759, December.
    48. Emilia Peni, 2014. "CEO and Chairperson characteristics and firm performance," Journal of Management & Governance, Springer;Accademia Italiana di Economia Aziendale (AIDEA), vol. 18(1), pages 185-205, February.
    49. Gull, Ammar Ali & Atif, Muhammad & Hussain, Nazim, 2023. "Board gender composition and waste management: Cross-country evidence," The British Accounting Review, Elsevier, vol. 55(1).
    50. Frank Wiengarten & Chris K. Y. Lo & Jessie Y. K. Lam, 2017. "“How does Sustainability Leadership Affect Firm Performance? The Choices Associated with Appointing a Chief Officer of Corporate Social Responsibility”," Journal of Business Ethics, Springer, vol. 140(3), pages 477-493, February.
    51. James G. MacKinnon & Matthew D. Webb, 2017. "Wild Bootstrap Inference for Wildly Different Cluster Sizes," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 32(2), pages 233-254, March.
    52. T. D. Stanley, 2005. "Beyond Publication Bias," Journal of Economic Surveys, Wiley Blackwell, vol. 19(3), pages 309-345, July.
    53. Perryman, Alexa A. & Fernando, Guy D. & Tripathy, Arindam, 2016. "Do gender differences persist? An examination of gender diversity on firm performance, risk, and executive compensation," Journal of Business Research, Elsevier, vol. 69(2), pages 579-586.
    54. Sebastian Gechert & Tomas Havranek & Zuzana Irsova & Dominika Kolcunova, 2019. "Death to the Cobb-Douglas Production Function," Working Papers IES 2019/26, Charles University Prague, Faculty of Social Sciences, Institute of Economic Studies, revised Sep 2019.
    55. Theo S. Eicher & Chris Papageorgiou & Adrian E. Raftery, 2011. "Default priors and predictive performance in Bayesian model averaging, with application to growth determinants," Journal of Applied Econometrics, John Wiley & Sons, Ltd., vol. 26(1), pages 30-55, January/F.
    56. Suwongrat Papangkorn & Pattanaporn Chatjuthamard & Pornsit Jiraporn & Sirisak Chueykamhang, 2021. "Female directors and firm performance: Evidence from the Great Recession," International Review of Finance, International Review of Finance Ltd., vol. 21(2), pages 598-610, June.
    57. Pathan, Shams & Faff, Robert, 2013. "Does board structure in banks really affect their performance?," Journal of Banking & Finance, Elsevier, vol. 37(5), pages 1573-1589.
    58. T. D. Stanley, 2001. "Wheat from Chaff: Meta-analysis as Quantitative Literature Review," Journal of Economic Perspectives, American Economic Association, vol. 15(3), pages 131-150, Summer.
    59. Nuria Reguera-Alvarado & Pilar Fuentes & Joaquina Laffarga, 2017. "Does Board Gender Diversity Influence Financial Performance? Evidence from Spain," Journal of Business Ethics, Springer, vol. 141(2), pages 337-350, March.
    60. Liu, Yu & Wei, Zuobao & Xie, Feixue, 2014. "Do women directors improve firm performance in China?," Journal of Corporate Finance, Elsevier, vol. 28(C), pages 169-184.
    61. Maximiliano González & Alexander Guzmán & Eduardo Pablo & María Andrea Trujillo, 2020. "Does gender really matter in the boardroom? Evidence from closely held family firms," Review of Managerial Science, Springer, vol. 14(1), pages 221-267, February.
    62. Sudheer Reddy & Aditya Mohan Jadhav, 2019. "Gender diversity in boardrooms – A literature review," Cogent Economics & Finance, Taylor & Francis Journals, vol. 7(1), pages 1644703-164, January.
    63. Angie Abdelzaher & Dina Abdelzaher, 2019. "Women on Boards And Firm Performance In Egypt: Post The Arab Spring," Journal of Developing Areas, Tennessee State University, College of Business, vol. 53(1), pages 211-229, January-M.
    64. David A. Carter & Betty J. Simkins & W. Gary Simpson, 2003. "Corporate Governance, Board Diversity, and Firm Value," The Financial Review, Eastern Finance Association, vol. 38(1), pages 33-53, February.
    65. Chris Doucouliagos & T.D. Stanley, 2013. "Are All Economic Facts Greatly Exaggerated? Theory Competition And Selectivity," Journal of Economic Surveys, Wiley Blackwell, vol. 27(2), pages 316-339, April.
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    More about this item

    Keywords

    meta-analysis; publication bias; Bayesian Model Averaging; female leadership; gender diversity; financial performance;
    All these keywords.

    JEL classification:

    • J23 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Labor Demand
    • J24 - Labor and Demographic Economics - - Demand and Supply of Labor - - - Human Capital; Skills; Occupational Choice; Labor Productivity
    • J31 - Labor and Demographic Economics - - Wages, Compensation, and Labor Costs - - - Wage Level and Structure; Wage Differentials

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