Compares infants' performance based on chronological age as opposed to conceptual age. The Bayley Mental Scales were used to test 20 premature experimental infants and 20 full-term control infants. Results demonstrated that an infant's performance must be judged on the basis of conceptual rather than chronological age. (MS)

Developmental changes in memory organization based on synonym and antonym relationships were examined in three experiments. Subjects were 64 second graders and 64 sixth graders. Some inadequacies of a false recognition paradigm for developmental research are identified and some alternative analyses are proposed. (Author/JH)

Investigated developmental trends in part-whole perception. The effects of the whole on the perception of small parts was greater at the kindergarten level than at the 4th grade; and there was a change in the perception of the parts so that they came to look like the whole in shape. (DP)

Blacks and whites did not differ significantly on any of the cognitive scales between two and five and a half; between six and eight and a half, whites scored about one-half SD higher. Blacks scored significantly higher on Motor Scales at ages four-five, but there were no differences at other ages. (Author)

The impact of sociocultural change upon age differences in adult cognitive behavior was studied. Results indicated stability of cognitive functioning throughout most of adulthood. Decrements found in other studies may be attributed to cultural change factors. (ST)

The present findings suggest that never" as a response and very often" as a response are mediated by different underlying processes, at least between the ages of 8 and 17. (Author/WY)

Reports a cross-sectional study examining intensity of stimulation and verbal stimulation in home circumstances as these factors relate to psychological development across several age groups (7th, 11th, 15th, or 22nd month of life). (WY)

Indicates that two major nonexclusive permutation problem-solving strategies increase with age: (1) mathematical group structure, and (2) holding initial marks constant while permuting the remainder. Significant sex differences are suggested. This report is based on a dissertation submitted to the Graduate School of Purdue University by the first…

Finds that the usual adult superiority in speed of processing could be markedly reduced if children were given equivalent amounts of domain knowledge. The effect was domain specific; differences in knowledge affected processing rates in both knowledgeable adults and children to about the same extent. (Auther/RH)

Results of this study show that after several free recall trials young children (about age 6) did not discriminate very accurately between recalled and nonrecalled items and that they were much less accurate than older children (8 years or above). These findings suggest marked developmental changes. (Author/SJL)

A Piagetian task of spatial functioning and a modified classification problem (simple intersection) were administered to children to test the degree of relationship between logical and sublogical operations by defining their common cognitive components. (Author/DB)

The role of cognitive development in the formation of social judgments was investigated in 2 experiments examining children's use of task outcome information in attributional judgments of ability and task difficulty. (SB)

Twenty first and 20 fourth grade children were tested on perceptual tasks involving moving stimuli that did not touch. In these tables, one stimulus appeared, among adults, to cause the other to move. (MS)