Changes in personality traits in late adolescence and young adulthood are believed to co-occur with changes in identity, but little research is available that supports this hypothesis. The present study addressed this relatively understudied area of research by examining longitudinal associations of Big Five personality traits (i.e., Neuroticism,…

Based on current theories of depression, reciprocal links between loneliness and depressive symptoms are expected to occur. However, longitudinal studies on adolescent samples are scarce and have yielded conflicting results. The present five-wave longitudinal study from mid- to late adolescence (N = 428, M age at T1 = 15.22 years; 47% female)…

The main purpose of this study is to unravel the impact of the Big Five personality factors on academic performance. We propose a theoretical model with conditional indirect effects of the Big Five personality factors on academic performance through their impact upon academic motivation. To clarify the mixed results of previous studies concerning…

Dimensions of two-year-old children's temperament were rated, and elements of children's language development were measured when children were two, three, and seven years old. Extraversion at age two contributed to individual differences in children's receptive language skills at ages three and seven and expressive language skills at age three.…

Examined relations between temperament, ability estimation, and injury proneness from toddlerhood through school age. Found that children scoring high on Extroversion and low on Inhibitory Control as toddlers and preschoolers tended to overestimate their physical abilities and have more unintentional injuries at age 6. Children low on Extroversion…