The ability of M. Levine's subset-sampling assumptions to account for the decrease in response latency following the trial of the last error was investigated by employing a distributed stimulus set composed of four binary dimensions and a procedure which required Ss to make an overt response in order to sample each dimension. (Author)

Infants of 6 months and older can be said to have discriminated between different orientations of the same form. (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)

Conclusions from five experiments were: that the frequency of implicit associational responses has minimal effect on verbal-discrimination and two-category classification learning; and that the intrapair associations which do develop in verbal-discrimination learning are not critically involved in the making of those discriminations. (Authors/CB)

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

Performance was consistently higher for pictures than for words, and this difference was unaffected by age, response mode, or presentation paradigm. (Author)

Results indicate that the RCR (rehearsal-of-the-correct-alternative response) plays an important role such that when the RCR is inhibited, performance is reduced. (Authors/CB)

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)

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)