In this authoritative work, SDT cofounders Richard M. Ryan and Edward L. Deci systematically review the theory's conceptual underpinnings, empirical evidence base, and practical applications across the lifespan.

This book is primarily about self-determination and competence (with particular emphasis on the former), and about the processes and structures that relate to these needs.

This book offers a practical yet powerful way to understand the psychological appeal and strong motivation to play video games.

Taking an approach that combines analytical and practical results, this is a valuable reference for a wide r