Examines the effect on observer agreement when reliability measurement is switched from an overt system to two successive systems of covert measurement. Subjects were 17 undergraduate psychology students. (BD)

Analyzes third grade children's performance on the Mueller-Lyer Illusion for whole and partial presentations of the figure. Results do not support Piaget's theory of perceptual development but are consistent with the theory of simultaneous and successive syntheses. (Author/BH)

This paper examines sex differences on the Franks-Marolla Semantic Differential measure of self-esteem and raises questions about the meaning of such differences for theoretical and experimental studies of self-esteem. Subjects were 442 sixth-through eighth-grade students. (BD)

The purpose of this research was to assess the infant's abilities to make successive discriminations in the size of a figure. The subjects were 90 10-month-old infants. (Author/MP)

A total of 230 children, ages 3 to 8, made six paired comparison judgments as to which of two brief incidents was funnier. At all ages children significantly preferred aggressive and incongruous incidents to neutral incidents. When aggressive and incongruous nonverbal incidents were paired, there was no significant preference. (Author/SB)

Examines the effects of the race of a model and the consequences of his behavior on children's imitation. White and Black first, third, and fifth grade boys and girls were exposed to filmed tasks performed by both White and Black peer models. (BD)

Tests the hypothesis that first born children are subjected to greater parental control than children born later. The subjects were 820 children aged 10-14, in a comprehensive school in Sweden. (Author/MP)

Examines Piaget's suggestion that the emergence of formal operations during the adolescent years is tied increasingly to occupational specialization. The subjects were 123 college students from four different pairs of academic majors. (MP)

Assessed individual (age, sex) and dyadic (same-sex, opposite-sex) differences in approach behaviors and investigated possible explanations for such differences. The subjects were 134 White preschool children, aged three to five. (MP)

Extends the findings of previous research which has shown that children who are imitated by an adult are subsequently more imitative of that adult than are children who have not been imitated. Examines the persistence of this effect through additional trials over a seven day period. Subjects were second grade children. (BD/BR)