ABSTRACT
This investigation is the first longitudinal behavioral genetic study of self-concept during adolescence. It is a follow-up of a previous study examining genetic and environmental contributions to children's perceived self-competence and self-worth using a twin/sibling design. The study investigated adolescents' reports 3 years later and stability across two time points. Participants included 248 pairs of same-sex twins, full siblings, and stepsiblings between 10 and 18 years old. The results showed that six of the seven subscales were heritable at the second time point. None of the scales showed significant shared environmental effects. Longitudinal analyses revealed genetic contributions to stability for perceived scholastic competence, athletic competence, physical appearance, and general self-worth. Social competence, on the other hand, showed nonshared environmental mediation across time. These findings highlight the importance of genetically influenced characteristics and unique experiences as correlates of individual differences in self-concept during adolescence.
Subject(s)
Aptitude , Psychology, Adolescent , Self Concept , Twins, Dizygotic/genetics , Twins, Monozygotic/genetics , Adolescent , Child , Female , Follow-Up Studies , Genetics, Behavioral , Humans , Internal-External Control , Male , Personality Development , Social Environment , Twins, Dizygotic/psychology , Twins, Monozygotic/psychologyABSTRACT
This longitudinal study of 144 young adolescents (ages 9-11 at phase 1) examined the hypothesis that boys and girls would experience increased "gender-differential socialization" across a 1-year period in early adolescence, and that such patterns would be stronger in families in which (a) parents maintained a traditional division of labor, and (b) there was a younger sibling of the opposite gender. Longitudinal analyses of 3 aspects of family socialization (adolescents' participation in "feminine" and "masculine" household chores; adolescents' involvement in dyadic activities with mothers and fathers; parental monitoring) revealed that gender intensification was apparent for some aspects of family socialization but not others. In addition, when gender intensification was apparent, it generally emerged in some family contexts but not in others. Only dyadic parent-adolescent involvement was characterized by an overall pattern of gender intensification in which girls became increasingly involved with their mothers and boys with their fathers; this pattern was exacerbated in contexts where adolescents had a younger, opposite-sex sibling.
