The task for the research reported in this paper was to clarify the conditions that are responsible for the diminished effectiveness of social approval following pre-exposure. (Authors)

Results indicated that the normal achievers learned more effectively under person and performance reinforcement than under tangible reinforcement, whereas the reverse was true for low achievers. (Author)

Study found that nonlearners, as well as learners, were unquestionably utilizing strategies at a rate greater than that expected on the basis of chance alone. (Authors)

The effects of rate of stimulus presentation and reinforcement conditions on the two-choice discrimination learning performance of MA matched normal and familial retarded children were examined. (Authors)