Understanding Domestic Violence is the first in a series of 5 related Guides developed for relationship and marriage educators and program administrators to help them understand and respond to domestic violence issues that may arise within their programs. This Guide provides a working definition of domestic violence and an introduction to the network of domestic violence services that has been built in the United States over the last 30 years.The full Resource Packet consists of the following Guides: Understanding Domestic Violence: Definitions, Scope, Impact and Response; Building Effective Partnerships with Domestic Violence Programs; Protocol Development and Implementation: Identifying and Responding to Domestic Violence Issues; Screening and Assessment for Domestic Violence: Attending to Safety and Culture; and After Disclosure: Responding to Domestic Violence. (Author abstract modified)