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)

Aim of the present study was to clarify the processes involved in the apparent lag in copying a diamond by reducing the lag experimentally with perceptual training of discrimination of orientation. (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)

Groups trained to compare the whole and subset improved in cue identification from negative instances; performance in the stimulus exposure group declined. (Authors)

Two major implications of this study are that repeated testing is a necessity for young children, and that repeated contrasts may provide a more accurate assessment of phonological discrimination ability in children. (Authors/MB)

Comparison between relational concepts and word definitions coincided with lower levels of thinking, and abstract definitions with the highest level. (Author)

A single administration of the reversal learning paradigm is not a sufficient basis for determining either a given subject's choice of option or his behavior on its constituent learning measures. This conclusion raises many questions about past research relating to mediation theory, since this paradigm has been the basic one employed. (Authors)