Nonsense syllables and two-arm semaphore" positions were the tasks in this study of experience free learning. (MB)

Aim of this experiment was to determine whether the increased retention of early learned behavior in animals might also be operable in children. (Authors/MB)

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)

Purpose of the study is to test Piaget's hypothesis of a parallel relationship between moral concepts and logical structures in human development. (Author)

Testing Pollack's hypothesis that decreases in effective contour contrast (resulting from a decrease in receptor sensitivity with age or from a change in actual stimulus contrast) lead to decreases in illusion magnitude. Conclusions are questioned by Sjostrom and Pollack (PS 501 740). (Author/MB)

Females cheated in response to consistently unfavorable self-perceptions, while males were influenced by immediate situational factors. (Authors)

Investigation combined two heretofore unconnected research areas: the newly structured operation of divergent thinking and the older domain of family resemblances. (Author)

Two hundred seventh grade Ss were administered a paired comparison scale for the purpose of predicting reinforcer effectiveness of fifteen stimuli. (Authors)

Results confirmed previous findings that response speeds would be faster following an 18- than a 8-second stimulus duration. (Author)

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)

Mothers of 232 pairs of twins were interviewed periodically about the similarities and differences in behavior displayed by their twins during infancy and early childhood. (Authors)

A combination of readiness and body-part training was the most effective in producing number conservation with external objects. (Authors)