Abstract
Abstract The effects of positive, negative, and conversation-control social reinforcement were examined on a gross motor accuracy task for 48 boys and 48 girls of primary school age. Subjects were randomly assigned to one of the treatments in which reinforcement was administered on every trial. Results indicated that male subjects in the positive and negative social reinforcement treatments performed significantly better than males in the conversation-control condition. Subjects' heart rate deviations from basal heart rates significantly differed as a function of social reinforcement, experimenter sex, and subject sex. These heart rate differences partially supported the obtained performance differences.
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