Edgar Schein is a prominent organizational psychologist known for his work on organizational culture. He developed a model that identifies three levels of culture: artifacts, espoused values, and basic underlying assumptions. His research helps organizations understand their internal dynamics and improve their effectiveness. Schein has authored several influential books, including Organizational Culture and Leadership, which explores how culture shapes behavior within organizations. He has also contributed to the field of change management, providing insights on how to navigate and implement change in a corporate environment. His work remains foundational in understanding workplace culture.