This study provided data showing that with increase in age there is an increase in spontaneous alternation behavior in preschool children. Mental age rather than chronological age is indicated as a more meaningful predictor of a child's tendency to seek out and approach varying stimulation. (GO)

Forty-four 7- and 8-year-old boys were classified as having high or low concrete reasoning ability or as being in a transitional state. Findings indicated that frustrated boys exhibit regression more than nonfrustrated boys and that the extent to which they regress is dependent upon cognitive level. (GO)

This study identified new methodological variables which might affect the responses of second and third grade children to Piagetian conservation tasks. (GO)

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)

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)

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)

In the present study, the authors explored age differences in event-based prospective memory (PM) across adolescence. The tasks consisted of an ongoing task (OT; i.e., personality questionnaire items, math problems) and an embedded prospective task that required participants to remember to make a special response whenever they encountered a PM cue…

Study explores the preschool child's ability to operate on a cognitive level by testing his capacity to compare a concrete stimulus with some abstract concept. (Author/CB)

In order to determine if there are developmental effects on information integration and dispositional attributions, 145 adolescents at two ages (13 and 18) were presented with information about hypothetical peers. (Author/MP)

A total of 72 children aged 1 1/2 to 4 1/2 were studied in a test of three hypotheses: younger children will use cues adaptively in a simple but not a complex situation; older children will act adaptively in both situations; the rate of change accelerates from 3 1/2 to 4 1/2 years old. (MS)

Presents a study of the development of conservation of weight among socially deviant adolescents. (BD)

Results support the hypothesis that certain classification skills underlie two types of role-taking ability: (1) in which children were asked how another child would think a cartoon ended if shown only the beginning; and (2) in which children were asked how another child would think a cartoon began if shown only the end. (Author/DB)

In a study of charitable behavior, 187 kindergarten through sixth grade Caucasian boys and girls were given the opportunity to share candy with children (1) described as similar to them, (2) with children described as dissimilar and needy, or (3) with both. (BD)

Developmental changes in a variety of cognitive processes as a function of age and schooling were examined in 160 rural Guatemalan children aged 5, 7, 9 and 11 years. (BD)