This book provides a summary of The Social Psychology of Organizations by Daniel Katz and Robert L. Kahn. It begins with an introduction discussing the origins and focus of the book. The book then aims to extend previous research by conceptualizing organizations using an open system point of view. It analyzes organizational structures and processes using concepts like roles, norms, values, and subsystems. Overall, the book seeks to link the individual and organizational levels of analysis using the concept of organizational roles.