This experiment evaluated the contributions of frequency and contingency of reinforcement to the deprivation-satiation phenomenon. The findings indicated that the perceived contingency of reinforcement is a more powerful determinant of its subsequent reinforcement effectiveness than is its frequency. (JMB)

These findings suggest that a high density of negative feedback induces both reflective and impulsive children to make fewer errors than does positive feedback. (Authors)

Findings of the present experiment reveal that discrimination processes play an influential role in nonreinforced imitation in severly retarded children. (WY)

This study assessed the adequacy of Gewirtz's interpretation of vicarious reinforcement and examined the development of responsiveness to vicarious reinforcement in an experiment in which 98 children (21/2-5 years) performed a discrimination problem while being exposed to a model who was either rewarded or punished on each trial. (SB)

A four choice discrimination problem was used to examine imitative behavior in children matched in mental age but differing in chronological age. The finding that older children imitated less than younger children is discussed in terms of socialization. (DP)

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)