Major Purpose of the study was to investigate the extent to which aggressive retaliation in boys at three age levels is influenced by two dimensions of hypothetical provocation: accidental versus intentional and verbal versus physical. (Authors/CB)

Results show that the retarded group was significantly more cooperative than the nonretarded group, and the 6-7 year retarded group was more cooperative than the 11-12-year retarded group. (Authors/CB)

Purpose of this experiemnt was to systematically investigate the behavioral effects of vertical rocking at different frequencies up to 1.5 Hz. (Authors/CB)

Findings are consistent with behavior observed in rhesus monkeys reared under similar conditions, thereby broadening the base from which to extrapolate to human development. (Authors)

It was concluded that drawing rules are essential and that adequate visual analysis is a necessary but not sufficient prerequisite to the production of accurate copies. (Author)

The early stimulation program provided for low-birth-weight, disadvantaged infants was shown to be effective in promoting behavioral development. (Authors)

These data appear to support the conception that the speech motor system can act as a mediator of other motor systems when speech'' is experimentally manipulated. (Author)

Results show that continuous stimulation reduced arousal level both behaviorally and physiologically, that this effect occurred quite rapidly, and that it endured relatively unchanged over time. (Author)

Purpose of this study was to examine the nature of correlations among tasks purporting to measure communicative, cognitive, role-taking, and spatial egocentrism in childhood. (Author/CB)

Study tests the hypothesis that younger children's self-reinforcing tendencies would be governed by prior social comparison concerning the relative amounts of rewards each received by himself and a peer, while older children will take into account whether any observed discrepancy in rewards received is merited or arbitrary. (Author/CB)

The finding that the impulsivity-reflectivity dimension was not related to risk-taking behavior was clearly unexpected. (Author)

Paper considers some of the problems facing the researcher interested in patterns of abilities as revealed by a discussion of the Lesser studues (1971), presentation of reanalyses of their data, and a critical review of the research. (Author/CB)

This reply refers to PS 502 443. (CB)