Factor structure of the Buss-Perry Aggression Questionnaire (BPAQ) with mentally ILL male prisoners

Because of the rising frequency and severity of violence in prison populations, quick and accurate screening of aggressiveness is vital. The Buss-Perry Aggression Questionnaire (BPAQ) is a 29-item self-report measure of aggression. Bryant and Smith proposed a refined 12-item, four-factor version with superior psychometric qualities; however, Williams, Boyd, Cascardi, and Poythress found a different factor structure among jail detainees than is usually found with nonoffenders. The current study used confirmatory factor analyses with data from mentally ill male offenders in a state prison to examine several previously proposed models for the BPAQ. Results confirmed the four-factor structure, the factorial invariance across populations, and supported the use of a modified 12-item refined BPAQ with this prison population.