This study evaluated the structure of an expanded version of the physical violence scale of the Conflict Tactics Scales (CTS). A community sample of 1,092 randomly selected men and women reported on perpetration and receipt of 14 violent acts in their relationships. Item response theory analyses indicated that the violence items were unidimensional for recipient and perpetrator reports of men's and women's violence. There was convergence between severity of acts as reported by perpetrators and recipients for both men's and women's violence. Results indicated that adding together the number of different acts endorsed to form a total score is appropriate for both men's and women's violence. Total scores were strongly related to likelihood of injury, supporting the validity of CTS-type measures to assess severity of violence.