Neural basis of the undermining effect of monetary reward on intrinsic motivation
- 15 November 2010
- journal article
- research article
- Published by Proceedings of the National Academy of Sciences in Proceedings of the National Academy of Sciences of the United States of America
- Vol. 107 (49), 20911-20916
- https://doi.org/10.1073/pnas.1013305107
Abstract
Contrary to the widespread belief that people are positively motivated by reward incentives, some studies have shown that performance-based extrinsic reward can actually undermine a person's intrinsic motivation to engage in a task. This “undermining effect” has timely practical implications, given the burgeoning of performance-based incentive systems in contemporary society. It also presents a theoretical challenge for economic and reinforcement learning theories, which tend to assume that monetary incentives monotonically increase motivation. Despite the practical and theoretical importance of this provocative phenomenon, however, little is known about its neural basis. Herein we induced the behavioral undermining effect using a newly developed task, and we tracked its neural correlates using functional MRI. Our results show that performance-based monetary reward indeed undermines intrinsic motivation, as assessed by the number of voluntary engagements in the task. We found that activity in the anterior striatum and the prefrontal areas decreased along with this behavioral undermining effect. These findings suggest that the corticobasal ganglia valuation system underlies the undermining effect through the integration of extrinsic reward value and intrinsic task value.Keywords
This publication has 36 references indexed in Scilit:
- Prefrontal cortex mediation of cognitive enhancement in rewarding motivational contextsProceedings of the National Academy of Sciences of the United States of America, 2010
- The Reward Circuit: Linking Primate Anatomy and Human ImagingNeuropsychopharmacology, 2009
- The Role of Human Orbitofrontal Cortex in Value Comparison for Incommensurable ObjectsJournal of Neuroscience, 2009
- Memory efficiency and the strategic control of attention at encoding: Impairments of value-directed remembering in Alzheimer’s disease.Neuropsychology, 2009
- General mechanisms for making decisions?Current Opinion in Neurobiology, 2009
- Feedback signals in the caudate reflect goal achievement on a declarative memory taskNeuroImage, 2008
- Neuronal Correlates of Goal-Based Motor Selection in the Prefrontal CortexScience, 2003
- Motivation Crowding TheoryJournal of Economic Surveys, 2001
- Reward-Induced Decrements and Increments in Intrinsic MotivationReview of Educational Research, 1984
- Motivational determinants of risk-taking behavior.Psychological Review, 1957