The research question examined was whether significant differences in psychosocial development and self-actualization exist between adult cohort groups whose childhood development occurred under very different social, economic, and technological circumstances. Subjects were 113 white middle-aged and elderly adults from similar socioeconomic…

Psychological and biological reasoning are intertwined yet differentiated in preschoolers' understandings of bodily processes and events. Three studies suggest that preschoolers distinguish biological phenomena from psychological ones in their causal reasoning, although their reasoning about biological phenomena is sometimes influenced by…

Used Australian Mathematics Competition to examine performance in mathematics of students young for their grade. The youngest students performed better than the oldest students. There were more males than females in the older group but no gender differences in the younger group. Items ranged from routine to highly sophisticated. (NBI)

Observed 10-, 26-, and 42-month-olds playing under several distraction conditions to describe development of attention and distractibility. Found that casual attention decreased and focused attention increased with age. Ten-month-olds were more distractible than older children, even during focused attention. Infants were most distracted by the…

Discusses how friendships are transformed from equality-based exchange relationships during early childhood into need-based communal relationships during adolescence. Builds upon thesis that developmental changes in friendships can best be understood using both deep- and surface- structure levels of analysis. Examines cognitive representations of…

Examined early development of guilt in 106 children observed in laboratory paradigms in which they were led to believe they had damaged valuable objects during 2 sessions at 22, 33, and 45 months. Found support for a mediational model in which fearful temperament contributed to guilt proneness, which served to inhibit children's tendency to…

Measures the relationship between developmental maturity and performance on a test of reading readiness. Finds no significant difference in performance between boys and girls or between older and younger children. Concludes that reading readiness is in large measure determined by the nature of the reading program. (RS)

A six-year study investigated relationships between individual development and: (1) changes in aggressive expression; (2) continuities of aggressive behavior in girls and boys; and (3) convergence between self-concepts and social attributions of others in ontogeny. Participants were 220 fourth grade students who were followed from childhood…

A study of effects of age and schooling in grades five and six on raw scores from a variety of general ability tests found that schooling: (1) is the major factor underlying the increase of intelligence test scores as a function of age; and (2) has a larger effect on verbal than nonverbal tests. (RH)

Examined developmental changes in the use of distance-based and calendar-based approaches to estimate the recency of two events. Found that children's ability to discriminate temporal relationships between two events appears by four to five years of age. In contrast, use of calendar information and cognizance of annual patterns was found only in…

Examined developmental changes and individual variations in the ways children use expressive information from others. Concluded that processing deficits are more probable for younger children or for children with low perceived control than for other children. (BB)

Analyzes multiple components of planning, including problem representation, goal selection, a decision to plan, strategy choice, strategy execution, and monitoring. Analyzes three tasks typically used to study planning: the Tower of Hanoi; errand scheduling; and story comprehension. Argues that the components required to perform a planning task…

Observed the behavior of 37 infants in response to their mothers' normal and still face. Infants reduced their smiling and increased their gazing away from mother during the still face condition compared to normal face condition. Compared to three month olds, six month olds were more likely to use hand activities while gazing away from mother. (MM)

Delineates a series of nine questions concerning the study of adolescent friendships that must be addressed by theorists and empirical investigators. The questions concern comparisons between different types of relationships; peer relationships; individual differences; developmental differences; changes in friendship over time; friendship…

The relationships of age, gender, and educational level with moral development in 94 middle-class 28- to 55-year-old adults (32 males and 62 females) were studied. Subjects were administered Kohlberg's Moral Judgment Interview (MJI). Males scored higher on the MJI than females. Findings support the continued development of moral judgment through…