The International Society for the Prevention of Child Abuse and Neglect (ISPCAN) Child Abuse Screening Tool-Retrospective (ICAST-R), based on consensus from international experts, is easy to read, relatively brief to complete, and produces very little missing data and moderate to high internal consistency in the item subsets. It has satisfactory properties for adoption as a survey tool to estimate prevalence and describe perpetrators and other contextual aspects of child abuse. The ICAST-R questionnaire was developed to gain consensus on core indicators of relatively common forms of maltreatment. The purpose of this research study was to develop a basic tool that can be used to estimate prevalence of behaviorally specific experiences and describe typical perpetrators of common aspects of childhood physical, emotional, and sexual abuse in international and cross-cultural studies. It examined the structure and content as well as the performance of the ICAST-R questionnaire in measuring child abuse. Figure, tables, and references