Homeless mentally disordered offenders and violent crimes

This study examines the prevalence of homelessness in a cross-sectional sample of 150 patients retained in a maximum-security hospital for mentally disordered offenders in New York City. The homeless mentally ill comprise only 2% of the city's mentally ill population, yet they account for 50% of the admissions to this forensic facility from the community. Compared to population base rate estimates, forensic patients are homeless at 25 times the rate found in the rest of the city's mentally disordered population and are 50 times more likely to be homeless than the general population. Further, there is a significant association between homelessness at the time of the instant offense and charges for violent crimes, after controlling for age, sex, race, and diagnosis. These data suggest that homelessness greatly increases the risk that mentally disordered persons will be forensically hospitalized and is closely associated with indictments for violent criminal behavior. Alternative explanations for these findings are discussed, emphasizing risk, vulnerability, and criminalization perspectives.Some of the data reported in this article were presented at the 42nd Annual Meeting of the American Academy of Forensic Sciences, February 24, 1990, in Cincinnati, Ohio. Thanks to Joel Dvoskin, John Monahan, Edward Mulvey, Charles D. H. Parry, Nancy Pruett, Henry Steadman, and three anonymous reviewers for their helpful comments on an earlier draft of this article.