Using insights from cutting-edge behavioral science and psychological research, this course provides students with skills to identify and address issues related to diversity, equity, and inclusion (DEI) within organizations. In the first half of the course, students will develop an understanding of the barriers to DEI, such as systems of inequality, denial of privilege, biases that hinder support for DEI, and the many biases facing marginalized groups. Through lectures, in-class role-play exercises, and case discussions, students will also learn about how organizational characteristics (e.g., power and status hierarchies, workplace cultures) impact the efficacy of DEI interventions. In the second half of the course, students will learn how to improve organizational DEI at the individual level (e.g., addressing bias, recruiting allies, creating psychological safety, advocating for oneself in the face of bias) and at the organizational level (e.g., hiring practices and workplace policies that measurably improve DEI). By the end of this course, students will be adept at identifying and addressing sources of inequity, having difficult conversations, mitigating problems associated with stereotypes, and managing diverse, equitable, and inclusive environments. Importantly, this class teaches students how to advocate for DEI issues in organizational settings, equipping them with the necessary research, persuasion tactics, and analytical skills needed to be advocates, even in the face of resistance. This course fulfills the Ethics and Social Responsibility (ESR) requirement.