The present findings suggest that never" as a response and very often" as a response are mediated by different underlying processes, at least between the ages of 8 and 17. (Author/WY)

Studied 2-year olds' understanding of pretense expressions of independent agency in scenarios in which a doll acted as the agent of a series of pretend events. Found no gender differences in the doll's imaginary intentions, but older toddlers performed reliably better than younger. Episodes requiring enacting conclusions to events that began with…

Discusses two experiments in which middle-aged, elderly, professional, and non-professional males and females were given the Conceptual Styles Test. An analysis of variance on the percentage of complementary responses revealed significant effects for age, occupation, and th interaction between age and sex. (ED)

This study investigated the relationship of physical manifestations of sex hormone influence to cognitive functioning in a longitudinal sample of 106 adolescent males and 99 females (ages 13, 16, and 18 years). Analyses of the 35 males and 40 females who had all cognitive and physical data at all three ages are reported here. (Author/SB)

This study examined preschoolers' performance on an observation task and a search task involving the invisible displacement of an object. Findings indicated that in the observation task, there was significantly longer looking to impossible than to possible outcomes among all children. Most 3-year-olds, but significantly fewer 2.5-year-olds,…

Four experiments and an analysis of pooled data from English and Japanese children show a linear increase in understanding false beliefs with number of older siblings; no such effect for children younger than 38 months; no helpful effect of younger siblings at any age; no effect of siblings' gender; and no helpful effect of siblings on a source…

Appraised cognitive patterning and development for 142 pairs of twins at 4, 5, and 6 years of age. From the results it was inferred that within a broad range of home environments, the genotype exerts a significant influence on the child's cognitive development. (Author/SDH)

The relation between sex of child, parental educational level, and performance on three different types of cognitive tasks was investigated among 48 2-year-old children. Results confirmed the expectation that parental education would be positively related to superior performance on all of the tasks for girls but unrelated for boys. (Author/WY)

Examined gender differences in cognitive outcome in children born prematurely who had incurred early cerebral lesions and in a high-risk comparison group. A significant gender difference in cognitive recovery was observed in the lesion group. Girls outperformed boys on standardized intelligence tests. No gender differences were observed in the…

The central thesis of this study was that maturational rate, or its physiological correlates, influences the development of the organization of higher cortical functions and is therefore an important determinant of sex differences in verbal and spatial abilities. (Author/SB)

Examines short-term longitudinal relationships between test measures of cognitive processes and ratings of classroom behaviors observed during free play. Subjects were 64 middle-class preschool children. (Author/MP)

Verbal and musical stimuli were presented to infants in a study of the relations of evoked potential left-right amplitude asymmetries to gender and hand preference. There was a relation between asymmetry and hand preference, and for girls, between asymmetry and stimulus condition. Results suggest a gender difference in cerebral hemisphere…

Results of this study demonstrate that constraint-seeking conceptual strategies can be trained in children as young as 6 years of age. (Authors/CB)