Examined quantitative evidence of an intellectual growth spurt during early adolescence by combining modern psychometric modeling, computerized testing with the Raven progressive matrices, and longitudinal socioeconomic and educational backgrounds. Found that gender difference was not significant. Notes the impact of this evidence on educational…

Analyzes longitudinal data for young men to determine the effects of schooling and tracking in Israeli high schools on changes in measured intelligence during adolescence. Concludes among other things, that extended schooling enhances intelligence substantially during adolescence; more in the academic than the vocational track. (Author/GEA)