Abstract
A study was run to determine if correct-choice performance on free-choice trials would vary with changes in the ratio of rewarded to nonrewarded ( R N ) forced trials in a discrimination learning task. The Ss were 30 3- to 5-year-old children. The task involved learning to choose the correct 1 of 2 differently colored cars and rolling it down a runway. Four blocks of 6 forced trials were interspersed among 4 blocks of 4 free-choice trials. In each forced-trial block, 10 Ss were given and R N ratio of 1 5 , 10 were given an R N ratio of 3 3 , and 10 an R N ratio of 5 1 . The results, indicating an increase in number of correct responses as the R N ratio decreased, were tentatively viewed as supporting the hypothesis that nonreward is a more important determinant of learning in a 2-choice discrimination task than is reward.
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