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)

Results confirmed previous findings that response speeds would be faster following an 18- than a 8-second stimulus duration. (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)

Younger men are both less engaged from the world and more efficient processors of information than older (especially less educated) ones. (Authors)

In this study boys were exposed to a televised verbal peer model who conformed to or deviated from a prohibition rule. (Author)

Findings indicate that infant boys may be more easily conditioned by visual reinforcement than are girls. (Author/MB)

The present study investigated some properties of the environment that control an infant's response to his mother's departure and, in particular, the readiness with which he follows her. (Authors)