Major finding was that punishment presented in the same sensory modality as the reinforcement was superior to punishment presented in a different sensory modality from the reinforcement. (Author)

Study found that stimulus presence during a delay of reinforcement interval enhanced performance, and to a large extent prevented the usual delay-produced decrement. (Authors)

Study attempts to clarify the attentional versus perceptual learning functions of presence of the discriminative stimuli during delay. (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)

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)

Results imply that sets of instructions may form a response class, with characteristics similar to those found in studies of generalized imitation. (Author)