The ability of three-year-old children to deceive was examined in order to determine whether they were able to hide their emotional expression intentionally. Results indicated that very young children have begun the process of learning how to mask their emotional expressions and support the role of socialization in this process. (RH)

In this research birth-order differences were studied in a sample of young children at three different ordinal positions. (Authors/CB)

Authors investigated the hypothesis that differences in aggressive behavior may partly be a function of differences (a) in the perception of aggressive cues, or (b) in the degree in which retaliation is expected. (Authors)

Reflection-impulsivity was studied in preschoolers to clarify underlying behavioral dimensions, sex differences, and contribution of activity level, mental age, and socioeconomic status. Analyses replicate a previous finding that dimension of behavioral impulsivity characterizes children with long response latency and high error scores, not…

Studies the aggressiveness of over 600 subjects, their parents, and their children over a 22-year period. Subjects who were more aggressive 8-year-olds were more aggressive 30-year-olds, exhibiting serious antisocial behavior as adults. The stability of aggression across generations within a family was also high. (Author/CB)

Investigated sex differences in the behavior patterns of toddlers and subsequent parental reactions. Data was obtained from observations in the homes of subjects, and compared to parents' answers on a child rearing questionnaire. (DP)

Tests the ability of 43 children, ranging in age from 20 months to 40 months, to discriminate between pictures of boys and girls and male and female adults. Compares children who passed this gender-task with those who failed it on three behaviors most often categorized as sex-typed: toy choice, aggression, and peer playmate selection. (HOD)

Explores the differences between boys and girls (5- and 7-year-olds) in their use of two kinds of strategies with interpersonal conflict: (1) active persuasion and negotiation, and (2) mitigation without disrupting social harmony between the interactors. (HOD)

Examines the social behavior of 34 preschool children, observed both at home and in preschool, to determine patterning interactions among siblings and consistency in children's interactions with siblings and peers. Concludes that children's behavior at home is most affected by relative age of their siblings. (HOD)

Observed play of 52 toddlers with a set of socially stereotyped masculine, feminine, and neutral toys in a day care setting over 14 months to (1) determine the age at which toddlers consistently exhibit sex-stereotyped toy choices in a natural setting and (2) investigate relation of parents' expectations and the children's own knowledge of gender…

Tabulated the frequencies of dyadic and group interactions in single-sex playgroups of 4- and 6-year-olds. Found that boys and girls at both ages engaged in similar frequencies but in different patterns of dyadic interactions. Only 6-year-old boys interacted in groups. (BC)

Study suggests that an important social stimulus is the sex of the child's peers. Peer sex and changes in the sex composition of dyads affect the frequency of occurrence in several categories of social behavior. (Authors/CB)

Developmental changes in specific types of fantasy play and the relation of role taking, egocentrism, and receptive vocabulary were examined in two- to six-year-olds. Both frequency and duration of material and ideational fantasy play increased with age, but play patterns differed. Data suggest developmental progression from object to person…