Seventy-five years of motivation measures (1930–2005): A descriptive analysis

Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being.

Richard M. Ryan, Edward L. Deci · American Psychologist · 2000 · 34.5K citations

Social Sciences, Psychology, Social Psychology +16

The "What" and "Why" of Goal Pursuits: Human Needs and the Self-Determination of Behavior

Edward L. Deci, Richard M. Ryan · Psychological Inquiry · 2000 · 32.1K citations

Social Sciences, Behavioral Sciences, Psychology +10

Self-determination theory and the facilitation of intrinsic motivation, social development, and well-being.

Richard M. Ryan, Edward L. Deci · American Psychologist · 2000 · 27.6K citations

Social Sciences, Psychology, Social Psychology +16

A theory of human motivation.

Abraham H. Maslow · Psychological Review · 1943 · 20.4K citations

Social Sciences, Behavioral Sciences, Psychology +8

Intrinsic and Extrinsic Motivations: Classic Definitions and New Directions

Richard M. Ryan, Edward L. Deci · Contemporary Educational Psychology · 2000 · 18.2K citations

Social Sciences, Psychology, Social Psychology +16