“…Researchers have compared violent and nonviolent offenders on measures other than maltreatment history such as neuropsychological assessments (Spellacy, 1977;Tarter, Hegedus, Alterman, & Katz-Garris, 1983), the Minnesota Multiphasic Personality Inventory (Spellacy, 1977), intellectual abilities such as IQ (Auffrey, Fritz, Lin, & Bistak, 1999;Tarter et al, 1983;Walsh, 1987), educational tests (Tarter et al, 1983), child and parental substance abuse, juvenile court history, assaultive behavior, and sexual deviance (Auffrey et al, 1999). However, fewer researchers (Capaldi & Patterson, 1996;Haapasalo & Hamalainen, 1996;Loeber & Schmaling, 1985;Rivera & Widom, 1990;Widom, 1989) have examined violent and nonviolent offenders and their maltreatment histories (Haapasalo & Hamalainen, 1996) and their findings are inconsistent.…”