Research on women's experiences of interpersonal violence has grown dramatically and, as a result, the ethical issues surrounding this research are a concern. Although regulatory procedures ensure that research participants are protected from undue risk, little is known about the impact of victimization research on participants. In this study, the authors examine the differences in the abilities of a "vulnerable" population (142 incarcerated women) to complete interviews about the extent and nature of their violent experiences. Using quantitative and qualitative analysis, the authors assess whether the prevalence and incidence of women's victimization experiences, other stressful life events, and personal backgrounds are related to response rates to specific questions and completion rates. The authors find that the cumulative effect of violence over the life course has a significant relationship to women's disclosure of sensitive issues and that providing multiple avenues for disclosure of prior victimization is critical for facilitating a positive outcome for research participants. (Contains 5 tables and 13 notes.)