In this longitudinal study, we investigated the factor structure and stability of early-life temperament in a German sample, using three measures developed within Rothbart's psychobiological approach. Temperament was measured using the Infant Behavior Questionnaire Revised (IBQ-R) at the ages of 6 and 12 months, the Early Childhood Behavior…

Individuals feel lonely when they perceive a discrepancy between their desired and their actually experienced quantity and quality of social relationships. Prior research has demonstrated the importance of loneliness for various health-related aspects. In the present article, we extend the existing literature on loneliness by investigating its…

Tests a theoretical model for the constitution of the self among adolescents in a cross-cultural, comparative study. Examines the impact of schools and families, as institutions and networks of interaction, on the self of adolescents. Based on data from three sample surveys from an East/West study of adolescent students. (DSK)