Violent interactions between parent and child, and between spouses, occur at a high rate in the United States. In response to this situation, several federal agencies are involved in various research projects whose goal is a better understanding of the roots of violence. Among these agencies are the Division of Injury Epidemiology and Control (Centers for Disease Control), the Office of Minority Health (Department of Health and Human Services), and the Antisocial and Violent Behavior Branch (National Institute of Mental Health).