Mark Lepper
| Mark Lepper | |
|---|---|
| Nationality | American | 
| Alma mater | Stanford University Yale University | 
| Known for | attitude polarization false consensus effect false polarization effect hostile media effect belief perseverance overjustification | 
| Scientific career | |
| Fields | Psychology | 
| Institutions | Stanford University | 
| Thesis | Dissonance, self perception, and the generalization of moral behavior (1971) | 
| Doctoral advisor | Edward Zigler | 
| Doctoral students | Thomas Gilovich Sheena Iyengar | 
Mark R. Lepper (born December 5, 1944) is the Albert Ray Lang Professor of psychology (emeritus) at Stanford University, and a leading theorist in social psychology. He is particularly known for his research on attribution theory and confirmation bias, and for his collaborations with Lee Ross.