We coded psychiatric evaluation files (N=278) and available matching court case files (N=208) for unselected defendants charged with criminal homicide in Allegheny County, Pennsylvania, between 2001 and 2005, excluding cases of vehicular homicide. During the sampling time frame, local court rules mandated that all individuals arrested on a charge of criminal homicide receive a psychiatric evaluation within 48 hours of arrest to assess competence to stand trial and acute treatment needs. Behavior Assessment Unit staff psychiatrists and forensic psychiatry fellows conducted these clinical interviews, which took approximately 30 minutes.