Proposes a theoretical model of cognitive development and applies this model to the secondary analysis of two large-scale studies which focus on the acquisition of formal operational schemata by adolescents in the United States and Israel. Results support the "unity" hypothesis of cognitive development that the various schemata of formal…

Compared are boys' and girls' abilities and achievement in a research class which included both classroom and research institute experience. It was found that boys were more active in classroom interactions and that the ratings of girls and boys were otherwise not significantly different. (CW)

Research focused on two factors that may be influencing females in choice of careers. Factors are role-specific self-concept in science and self-perception in terms of stereotypical masculine and feminine characteristics. Logical ability and mathematics and science courses were also examined as factors in career choice. Results of data for 177…

Reports on a study in which 61 science supervisors were asked to identify their most effective and least effective teachers. Differences were found regarding gender, quantity of National Science Foundation workshop experiences, and certain elected in-service experiences. (TW)

Utilized an experimental design structure across 4 scientific contexts which tested 18 boys and 18 girls who were closely matched for ability levels and curriculum background. No gender differences were detected in the scientific contexts of observation, reporting, or planning skills, and there was no differential performance on the use of…