Since the mid-1980s pioneering research about daily coercive interactions in relationships has shed light on the development and treatment of multiple mental health problems and school safety issues. This handbook brings together the expertise and the perspective of leading scholars and intervention developers in an effort to interpret and clarify coercive dynamics and discuss interventions that reduce coercion and improve health and adjustment. Researchers examine social, physiological, and genetic correlates of coercion dynamics from multiple perspectives, including an evolutionary framework. Coercion is explored with respect to the etiology of aggression, antisocial behavior, violence, anxiety disorders, suicidal behavior, and academic adjustment. Interventions are described that effectively reduce coercion in families, romantic and peer relationships, committed adult intimate relationships, and schools, and among youths and families with autism. Several chapters illustrate methodological, measurement, and conceptual issues that enhance the scientific understanding of how daily coercive interactions influence adjustment over time. Also offered are prospects for prosocial cooperation free of coercive dynamics and strategies for disseminating interventions across global communities for promoting public health and well-being.