Social and nonsocial behaviors of infant rhesus (macaca mulatta) and pigtail (M. nemestrina) monkeys reared in total social isolation were compared with those of socialized controls. Results question the generality of rhesus total isolate behavior as a model for some human problems. (Author/SB)

Two tasks were used to assess the capacities of 6- to 14-year-old children to interpret metaphoric statements. Results suggest certain cognitive prerequisites of mature metaphoric comprehension and help to clarify the ontogenetic relations among the abilities to produce, comprehend, and explicate the rationale of metaphoric language. (Author/SB)

Five experiments were run to assess imagery performance and perspective-taking in children ages 6 to 11. In Experiments 1-3, children anticipated results of rotating an object. Experiment 4 assessed the same children on a version of the traditional perspective-taking task. Experiment 5 studied children who took extreme approaches. (SB)

In this study, an attempt was made to determine whether psychophysiological differences existed between 20 prematurely born and 20 full-term infants in their responsiveness to tactile stimulation and in their ability to discriminate among different intensities of such stimulation. (Author/SB)

Preschool and third grade children matched the orientation of stimuli tachistoscopically presented at times individually set to achieve about 75 percent correct performance. Preschoolers showed no superiority on left versus right while third graders showed significant top and right superiorities. Results are compared with those for adults on the…

Each child played the role of both speaker and listener in a communication game with the experimenter. Failures in communication were made to occur, and the child was asked to judge whose fault these were and why. Findings cast doubt on accuracy of Piaget's account of the breakdown of egocentrism. (Author/SB)

The hypothesis tested was that the evaluations and affective responses which accompany ongoing behavior may operate as reinforcers and punishers, thus exercising control over the persistence of those behaviors. Results indicate potent systematic effects due to the differing content of such evaluations and the associated affect or affective tone.…

Purpose of study was to investigate the applicability of Piaget's theory and methods to the study of conservation in nonhumans. Two out of four subject monkeys achieved stringent and statistically significant performance criteria in sameness-difference judgment tests and showed significant generalization in the fewest possible trials. (Author/SB)