Theorists
Mark Lepper – 1944 Present
A comprehensive academic examination of Mark R. Lepper's life, seminal experiments on intrinsic motivation, hostile...
# Mark Lepper
5 results
Experiments
The Overjustification Effect Experiment (Magic Markers) – Mark Lepper, David Greene, and Richard Nisbett
A comprehensive academic analysis of Lepper, Greene, and Nisbett's landmark 1973 Magic Markers experiment demonstrating...
September 16, 2026
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Dr. Mohammed Looti
Experiments
Choice Overload Experiment – Sheena Iyengar and Mark Lepper The Mental
A comprehensive academic analysis of the seminal Iyengar-Lepper choice overload experiments, examining behavioral mechanisms and...
September 12, 2026
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Dr. Mohammed Looti
Experiments
The Hostile Media Effect Experiment – Robert Vallone, Lee Ross, and Mark Lepper
A comprehensive academic analysis of the landmark 1985 Vallone, Ross, and Lepper hostile media effect...
September 6, 2026
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Dr. Mohammed Looti
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
•
Dr. Mohammed Looti