Investigated predominant kinds of parent-infant play and individual differences in play style. Participants were 24 families of healthy, full-term, firstborn infants, four boys and four girls at each of three ages: 7, 10, and 13 months. (RH)

A total of 114 infants at three age levels (11, 18, and 28 weeks) were rated by their mothers on a termperament questionnaire and subjected to a habituation procedure. Results suggest that subject loss in habituation studies may be the result of nonrandom individual difference factors and not just the result of temporary fluctuations in state.…

Delay/response inhibition in the presence of an attractive stimulus and compliance with maternal directives in a clean-up task were observed among subjects 18, 24, and 30 months of age. Results suggested (1) achievement of self-control is a major developmental accomplishment, and (2) individual differences in self-control emerge and are…

Investigates the relationship between self-recognition and self-evaluative emotions in two studies on 27 children aged 9-24 months and 44 children aged 22 months. The results of both studies indicate that embarrassment but not wariness was related to self-recognition. (RJC)

Young children and adolescents regarded the crossing of stereotyped gender boundaries as more wrong and expressed a greater personal commitment to sex-role regularity than did children in middle childhood. Although young children and adolescents viewed gender differentiations as an aspect of psychological-personal identity, their conceptions of…

Examines several issues concerning Gilligan's and Kohlberg's models of moral orientations and Kohlberg's model of moral stages in a longitudinal study of 233 subjects aged 5 to 63 years. Results revealed few violations of the stage sequence over the two-year longitudinal interval. (RJC)

The ability of 40 children four and five years of age to discriminate reflections and rotations of visual stimuli was examined in a kinetic imagery task. Results revealed that prediction accuracy was associated with the existence of orientation markers on the stimuli, as well as age, sex, type of discrimination, and several interactions among the…

In a double-baseline design, children were observed first after being asked to take care of a baby then after watching a male or female adult demonstrate appropriate interactions with the baby. Younger and older day care children (between 30 and 63 months old) participated. (Author/RH)

Examined sequential dependencies in solitary and interactive states of social organization as a function of age, sex, and type of toy in 12 triads of 3 1/2- and 5-year-old children. Each triad was observed during two 30-minute sessions, one in which objects with highly specific functions were available and one in which objects with relatively…

Young and older nursery school children were taken to three locations in their school and asked to point to five targets on the school grounds. Older children were more accurate than younger children, but children's spatial representations were relatively nonintegrated at both age levels. Consistent sex differences in favor of males were found.…

Elementary school children were observed and interviewed to examine sex and age differences in evaluations of, and attributions to, school performance of self and others. (PCB)

The sex-typed and sex-neutral activities of 54 preschoolers and their peers' negative and positive responses were recorded during free-play periods in three mixed-age day care classrooms. Each child was observed for a total of 100 minutes of peer interaction. (Author/RH)

Twenty-five infants were tested every two weeks on the AB Object Permanence Task, from the time they first reached for a hidden object until they were 12 months old. Results indicate that the AB provides an index of the ability to carry out an intention based on stored information despite a conflicting habitual tendency. (Author/RH)

Studied the psychological well-being of 159 white and black students during the transition to junior high school. Group differences in adjustment were examined with respect to race, sex, and academic competence. Adjustment patterns were found to be complex and highly differentiated. (PCB)

Assesses the effects of gestational age, race, and sex on neurobehavorial responses of 510 singleton infants who were evaluated at term conceptual age using a modified Prechtl Neurologic Examination. Results suggest that gestational age at birth is the most influential variable; race is also important, but gender has minimum impact. (Author/CB)