Studies the nature and development of perceptual estimation in a task requiring the coordination of spatial dimensions. (BD)

Presents an analysis of Pascual-Leone's quantitative model for the measurement of the cognitive capacity of children. Presents an experiment in which 8-year-old children are asked to reproduce single actions and combinations of actions modeled by an experimenter. (BD)

The temporal order in which a man finishes school, starts working, and first marries is an important characteristic of his life course. Ordering patterns are distributed on a scale of the degree of conformity with the normative ordering of events. (Author)

Investigates the effects of an advance organizer lesson, presenting high-order science concepts and an elementary problem solving strategy for determining causal relations on children's use of operations of exclusion (as defined by Inhelder and Piaget, 1958). Results suggest that acceptable solutions to problems requiring the operations of…

Does not support the hypothesis that cognitive regression takes place as a part of normal aging. (RL)

The study explored the effect on kindergarten children of four different presentations of an opportunity to help an adult with a simple task. (Editor/MP)

Reviews aspects of child development from various theoretical perspectives. Discusses developmental trends in pre-school years, early elementary years, and upper elementary years. (AV)

Conceptual system as a cognitive-developmental variable in personality has been assumed to relate to different cognitions of self and others and of interpersonal relations at each developmental stage. The assumed relationship between conceptual system and some personality variables was studied in a group of students. (Editor)

Presents a study of decalage between object permanence and person permanence. Decalage was influenced by environmental as well as stimulus factors with infants tested between 6- and 81/4-months/of-age. (BD)

Presents a study of perspective taking ability among children aged 3 to 7. The first task involved a classic block appearance task. In the second task, the child and/or the experimenter each wore different colored glasses and the child was asked to describe how a white card appeared to each of them. (BD)

Compared the performance of 29 institutionalized cultural-familial mental retardates on Piagetian conservation tasks. Examined the effects of age, sex, and degree of retardation on conservation performance. (BD)

A longitudinal study of the moral development of 52 upper middle class adolescents and their parents was undertaken to evaluate the validity of Kohlberg's six-stage model of moral judgment development. (BRT)

Reports two experiments supporting the hypothesis that with reading experience, children identify the systematic relationship between pronunciation and orthographic structure and utilize that knowledge in the pronunciation of unfamiliar words. (HTH)

Eighty unimpaired adults took the iconic-symbolic (I-S) subtest of the Muma Assessment Program under traditional protocols and revised instructions like those used in classic studies of classification ability. Only 18 functioned at the symbolic level as defined by the protocols; revised instructions more frequently evoked the expected symbolic…