The Clinical Psychology and Violence Research Unit headed by Tobias Hecker focuses on the consequences and prevention of violence and maltreatment of children and adolescents. A core part of the research is the international and global perspective on trauma, violence and maltreatment in childhood and adolescence. We study the consequences of maltreatment at very different levels, e.g., clinical symptom level, behavioral level, cognitive level, and biological and molecular level (e.g., cortisol, epigenetics). The focus of research is on intervention studies using rigorous and experimental research methods (e.g. Cluster Randomized Controlled Trials).