Examines children's understanding of gender permanence and the genital basis of gender as distinct stages in the development of a gender identity. Subjects were 237 Swedish children aged 3 to 10 years. (CM)

The locomotor skills of walking and running were compared in newly running infants at 5.5, 7.5, and 9.5 months of independent walking, and then again at 3 years of age. Collective variables showed transitional forms over the first few months of running, indicating a relatively continuous change across the two gait forms. (MDM)

Four studies explored children's beliefs about the stability of positive traits among three groups. Findings indicated that younger children were more likely than older children or adults to believe that negative physical and psychological traits would change positively, that they could control the expression of a trait, and that extreme positive…

Examined longitudinally the effects of infants' age, body dimensions, and experience on the development of crawling. Although most infants displayed multiple crawling postures en route to walking, development did not adhere to a strict progression of obligatory, discrete stages. Duration of experience with earlier forms of crawling predicted the…

Interviewed family members about family relationships and observed family members' interactions. Found that, compared to other girls, early maturing girls experienced higher levels of psychological distress; experienced greater psychological distress in grade 10 when they had a mixed-sex friendship network in grades 7 through 9; and were more…