Our research focuses on social and emotional development. We concentrate on two closely related research lines. On the one hand, we conduct fundamental research on social and emotional development and related processes across the human life span. Taking a developmental perspective, we focus on social factors (e.g., parents and peers), individual factors (e.g., temperament, personality), and the interplay between the two. On the other hand, we conduct applied/clinical research on the causes and treatment of psychopathology in childhood, adolescence and young adulthood (including addiction, aggression, anxiety, depression, and trauma). We aim to contribute new knowledge to developmental science that is also relevant for clinical, developmental and educational practice.