Dutch adolescents, ages 12 to 14, completed the Utrect-Groningen Identity Development Scale, which encompasses separate scales for commitment in exploration for relational, school, and occupational identity. Results show that relational identity becomes consistently stronger as adolescents age, and that for girls, relational identity is much more…

Investigates the concurrent correlates and developmental antecedents of personality types in a sample of 14 to 19-year-old Dutch adolescents. Three main personality types with behavioral and parenting correlates and antecedents were identified. Discussion highlights the importance of the family environment in understanding behavioral correlates of…

A person-centered approach was followed for the study of patterns in personality development in middle childhood through early adolescence. In a longitudinal study of 100 children, the "big five" personality factors--extraversion, agreeableness, conscientiousness, emotional stability, and openness--were assessed in person descriptions by…

To further understanding of temperament-interaction relationships, patterns of interactive behavior were observed in 30 lower-class mother-infant dyads (15 irritable and 15 nonirritable infants) at monthly intervals over a 6-month period. Findings revealed that maternal behavior was systematically more positive with nonirritable infants that with…

This longitudinal study examined consistency and change in human personality. Rather than studying the consistency of individual differences over time, an approach which considers only the stability of a variable at the group level and ignores differences in stability at an individual level, this study used a person-centered approach to study…