These results demonstrate the kindergarten child's relative inability to produce ongoing thematic activity when this activity is physically separated from the objects involved. (Authors)

Acquisition, reversal, adaptation and inhibition of the orienting response were investigated in a mentally retarded sample and its CA and MA matched normal groups. (Authors)

Study conducted to investigate attention span in relation to various schedules or regimes of reinforcement. (Author/MB)

Results support the contention that with advancing years brain-damaged children may adapt to and/or recover from the deficit(s) involved in the inability to develop and maintain a readiness to respond. (Author/MB)

Length of intertrial interval was found to be positively related to the efficiency of concept learning in a blank-trials task. (Author)

Differences in the rate of successive acquisition of four concepts as a result of two presentation conditions and their interaction with the learner's preferred strategy was investigated. (Authors)

Compensation as assessed by any one test or criterion used is more difficult than conservation. And, the understanding of the compensation principle, as manifested in verbal statements, continues to develop well after the age at which liquid conservation may be taken for granted. (Authors)

Study sought to provide developmental data about the age at which a child will not only color the same object the same color in a reliable fashion, but will also use the correct color." (Author)

Author suggests that new educational theories being formulated for British schools will affect industrial training in that employees' needs and attitudes will be seen to have equal weight with practical goals. (PD)

Study was designed to provide further evidence on the speed of development of the acquired distinctiveness and equivalence effects during the transfer task. (Author)