Preoperational and concrete operational kindergarten children received stimulus differentiation training, either with or without feedback, and then a series of discrimination learning problems in which a blank trial probe was used to detect a child's hypothesis after each feedback trial. Piagetian stage theory requires elaboration to account…

Examines the influences of behaviorist psychology on performance and instruction technologies. The basic assumptions of behaviorism are outlined, reinforcing contingencies are reviewed, conditioning is described, and such specific topics as stimulus control, behavior chaining, and successive approximation are discussed. (Author/JL)

This paper describes further research on a learning procedure for layered networks of deterministic, neuron-like units, described by Rumelhart et al. The units, the way they are connected, the learning procedure, and the extension to iterative networks are presented. In one experiment, a network learns a set of filters, enabling it to discriminate…