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Psychol Sci. 2017 Jul;28(7):1016-1026. doi: 10.1177/0956797617693326. Epub 2017 May 10.

Distinct Motivational Effects of Contingent and Noncontingent Rewards.

Author information

1
1 Nuffield Department of Clinical Neurosciences, University of Oxford.
2
2 Department of Psychology, University of California San Diego.

Abstract

When rewards are available, people expend more energy, increasing their motivational vigor. In theory, incentives might drive behavior for two distinct reasons: First, they increase expected reward; second, they increase the difference in subjective value between successful and unsuccessful performance, which increases contingency-the degree to which action determines outcome. Previous studies of motivational vigor have never compared these directly. Here, we indexed motivational vigor by measuring the speed of eye movements toward a target after participants heard a cue indicating how outcomes would be determined. Eye movements were faster when the cue indicated that monetary rewards would be contingent on performance than when the cue indicated that rewards would be random. But even when the cue indicated that a reward was guaranteed regardless of speed, movement was still faster than when no reward was available. Motivation by contingent and certain rewards was uncorrelated across individuals, which suggests that there are two separable, independent components of motivation. Contingent motivation generated autonomic arousal, and unlike noncontingent motivation, was effective with penalties as well as rewards.

KEYWORDS:

eye movements; motivation; rewards

PMID:
28488927
PMCID:
PMC5510684
DOI:
10.1177/0956797617693326
[Indexed for MEDLINE]
Free PMC Article

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