Few studies have investigated the characteristics of female sex offenders and factors and/or causes of female deviance. Research to date has been descriptive in nature, with few comparison studies. Using a correlational design and three valid instruments, female sexual offenders and a matched group of female nonsexual offenders are compared in the areas of personality disorders, chemical dependency, childhood trauma, sexual trauma, emotional neediness, cognitive distortions, and social competence. A sample of 130 incarcerated females, 60 sex offenders, and 70 nonsexual offenders is used. Significant results are found in the areas of total childhood trauma and severity of sexual abuse suffered and social and sexual adequacy. No differences are found in abuse of substances, personality disorders, emotional neediness, or cognitive distortions. (Contains 3 tables.)