Self Determination Theory
Self Determination Theory (SDT) is a framework in social and behavioral psychology that examines human motivation and psychological well-being. Developed primarily by Edward Deci and Richard Ryan beginning in the 1970s, the theory posits that individuals have three fundamental psychological needs: autonomy, competence, and relatedness. When these needs are satisfied, people experience greater intrinsic motivation, engagement, and overall psychological health.
Core Psychological Needs
Autonomy refers to the need to feel in control of one’s own actions and choices rather than controlled by external forces. Competence is the need to feel effective and capable in managing one’s environment and mastering challenging tasks. Relatedness is the need to feel connected to others and to be part of a community. SDT suggests that satisfaction of all three needs is essential for optimal motivation and well-being across different life domains including work, education, and personal relationships.
Types of Motivation
The theory distinguishes between intrinsic motivation—engaging in activities for inherent satisfaction—and extrinsic motivation—engaging in activities for external rewards or to avoid punishment. SDT proposes that extrinsic motivation exists on a spectrum from amotivation through various degrees of internalization. When external regulations are internalized and aligned with personal values, extrinsic motivation can become relatively autonomous and support well-being.
Applications and Research
SDT has been applied extensively in organizational psychology, education, sports, healthcare, and parenting contexts. Research using the framework has examined how autonomy-supportive environments enhance learning outcomes, how workplace autonomy affects job satisfaction and performance, and how parenting styles influence children’s motivation and development. The theory continues to generate empirical research examining the universality of these psychological needs across different cultures and contexts.