This study examined the impact of resource constraints on the psychological well-being of survivors of intimate partner violence (IPV), testing whether resource constraints is one mechanism that partially mediates the relationship between IPV and women's well-being. Although within-woman changes in resource constraints did not mediate the relationship between change in physical abuse and change in well-being, change in resource constraints fully explained the relationship between change in psychological abuse and change in psychological well-being over time. Survivors' resource constraints were fully responsible for the significant mental health consequences that women experienced after psychological abuse. Between-women differences in initial resource constraints were also examined; however, they did not mediate the relationship between women's earlier experiences of abuse and change in their well-being over time. Implications for future research and practice are discussed. C 2010 Wiley Periodicals, Inc.Intimate partner violence (IPV) is among the most serious of social problems that affect women's lives in the United States today. It is estimated that 1.5 million women suffer the devastating consequences of IPV each year (Tjaden & Thoennes, 2000). The implications of IPV are significant and extensive and, for most women, extend far beyond physical injuries. Abuse also has substantial negative implications for survivors' psychological well-being (Campbell, 2002).