Module 4 focuses on the importance of basic psychological need fulfillment in several areas of life. The first lecture covers research demonstrating that doing good for others and contributing to one’s community are associated with greater well-being. The next lecture centers on one of the most important ingredients to well-being -- meaningful relationships and the fundamental importance of psychological need support to building quality relationships. Next, discussion turns to some of the most formative relations in one’s life -- the relation between parents and children. This lecture covers research demonstrating that need support from parents is associated with optimal growth and development in children. The next lecture focuses on the process of identity formation, or how one comes to understand and develop one’s identities, roles, and interests. Also, in this module, a lecture dedicated to the application of SDT to education. Specifically, this lecture covers the importance of motivation to learning and how teacher styles impact students’ motivation and learning outcomes. Finally, the last lecture examines work and organizations and discusses how need support from managers and the work environment impacts outcomes like retention, job satisfaction, corporate citizenship, and work engagement.