A Human Analogue Of Incentive Contrast Effects

This study represents a human analogue to the straight alley incentive contrast literature in which rats served as the primary research subject. Employing a motor task, incentive was bi-directionally manipulated from preshift to postshift training. The nine groups of subjects received 15 pre-shift trials of either large, medium, or no reward factorially combined with 5 postshift trials of the same incentive values. No evidence for positive or negative contrast effects was found.