Theories
Cognitive Evaluation Theory – Edward L. Deci & Richard M. Ryan
A comprehensive academic analysis of Cognitive Evaluation Theory by Edward L. Deci and Richard M....
# Intrinsic Motivation
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Experiments
The Overjustification Effect Experiment – Mark Lepper and David Greene
A comprehensive academic analysis of the seminal 1973 overjustification effect experiment by Mark Lepper, David...
September 5, 2026
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Dr. Mohammed Looti
Scales
Basic Psychological Needs Scale for Korean Adolescents
The Basic Psychological Needs Scale for Korean Adolescents (Lee & Kim, 2008) is an 18-item...
September 5, 2026
•
Dr. Mohammed Looti