A child's history of reinforcement is regarded as setting a standard that determines what current rates of reinforcement will be deprivational or satiational for him. (Author)

It was concluded that both social and vocal elements are necessary to stimulate a general increase in the number and length of consonant utterances, but there was no evidence that stimulation encouraged infants to imitate the consonant phonemes presented. (Author)

The expectation that an effective conservation training procedure would be one in which the child was confronted with opposing points of view was investigated in an experiment and a replication experiment in which the child's point of view was brought into conflict with those of other children. (Author/RY)

The purpose of the study was to determine (a) whether there are differences in the way in which Negro and white experimenters interact with Negro and white subjects; and (b) whether such differences influence performance on tests of motor impulse control, reflectivity, innovative behavior, and curiosity. (Authors)