Cognitive evaluation theory

Intrinsic motivation

Autonomy

Cognitive psychology

Self-determination theory

Political science

Psychology

Social psychology

Journal of Personality and Social Psychology

Two laboratory experiments and one field experiment were conducted to investigate the effects of external rewards on intrinsic motivation to perform an activity. In each experiment, subjects were performing an activity during three different periods, and observations relevant to their motivation were made. External rewards were given to the experimental subjects during the second period only, while the control subjects received no rewards. Of interest was the difference in the experimental group's motivation between Period 1 and Period 3, relative to the difference in the control's. The results indicate that (a) when money was used as an external reward, intrinsic motivation tended to decrease, whereas (b) when verbal reinforcement and positive feedback were used, intrinsic motivation tended to increase. Discrepant findings in the literature were reconciled using a new theoretical framework which employs a cognitive approach and concentrates on the nature of the external reward. If a boy who enjoys mowing law...

Effects of externally mediated rewards on intrinsic motivation.