Book excerpt: This book is one of the first to provide an overview of recent developments in social psychological theory as it applies to organizational issues. It brings together outstanding scholars whose research touches the interfaces of social psychology , IO psychology and organizational behavior. Social psychology deals with social interactions between individuals and groups. As individuals populate, run, and confuse (!) organizations, analyzing individual behavior and interpersonal interactions is critical for understanding organizational effectiveness and success, as well as individual satisfaction and well-being. The chapters in this volume address the critical topics for current and future organizational life such as prosocial and antisocial behavior, ethics, trust, creativity, diversity, stress, conflict, power and leadership and many more.