This book offers a groundbreaking exploration of critical mass theory in the context of board gender diversity and gender quotas. Authored by leading experts in the field, it provides an up-to-date analysis of how gender diversity impacts corporate governance and the effectiveness of quotas in achieving equitable representation. Through this comprehensive study, readers will gain insights into the dynamics of boardroom diversity and the challenges of implementing gender quotas. Key concepts such as token theory, women directors, and corporate governance are thoroughly examined, with particular attention given to the empirical evidence supporting critical mass theory. The authors present a nuanced analysis of why a critical mass of female directors may not always lead to the anticipated outcomes, challenging conventional wisdom and offering fresh perspectives. This book is essential for anyone seeking to understand the complexities of gender diversity in corporate settings. Ideal for researchers, scholars, and practitioners in corporate governance, this book is a valuable resource for those interested in the intersection of gender studies and business management. It is a must-read for academics and policymakers aiming to foster more inclusive and effective boardrooms. With its unique focus and authoritative insights, this volume stands out as a vital contribution to the field.