We investigated how changes in outcome magnitude affect behavioral variation in human volunteers. Our participants entered strings of characters using a computer keyboard, receiving feedback (gaining a number of points) for any string at least ten characters long. During a "surprise" phase in which the number of points awarded was changed, participants only increased their behavioral variability when the reward value was downshifted to a lower amount, and only when such a shift was novel. Upshifts in reward did not have a systematic effect on variability. © 2013 Psychonomic Society, Inc.
CITATION STYLE
Jensen, G., Stokes, P. D., Paterniti, A., & Balsam, P. D. (2014). Unexpected downshifts in reward magnitude induce variation in human behavior. Psychonomic Bulletin and Review, 21(2), 436–444. https://doi.org/10.3758/s13423-013-0490-4
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