This review used 4 types of longitudinal models (descriptive models, prediction models, developmental sequence models and longitudinal mediation models) to identify regular patterns of psychosocial development in adolescence. Eight patterns of adolescent development were observed across countries: (1) adolescent maturation in multiple…

Expands an existing nonlinear dynamic epidemic model of onset of social activities (EMOSA), motivated by social contagion theory, to quantify the likelihood of pregnancy for adolescent girls of different sexuality statuses. Compares five sexuality/pregnancy models to explain variance in national prevalence curves. Finds that adolescent girls have…

Reviews research examining the predictive aspects of childhood sex-typed behavior for sexual orientation. Prospective studies suggest that childhood cross-typed behavior is strongly predictive of adult homosexual orientation for men, whereas retrospective studies are useful in determining how many homosexual individuals displayed cross-sex…