or sexual assault. These theories can be categorized into three topics; biological, psychological, and environmental. Biological theories include those that link genetics with male aggression, propose biochemical explanations such as abnormal sex steroids or endocrine malfunctions, or causes due to neurological impairments. Psychological theories usually focus on childhood experiences. Those experiences may include incidents such as sexual, physical or emotional abuse that would repress the development of self-confidence and appropriate attachments to others. As well as experiences that reward aggressive behavior. Environmental theories focus on societal causes of sex crimes such as the availability of pornography, as well as temporary situational factors that encourage inappropriate responses. The environmental theories also focus on factors that remove normal restraints from deviant behavior, such as alcohol and drug abuse2.
             The current research on the theories of sexually deviant behavior has focused on three topics; deviant sexual arousal patterns, heterosexual social skills, and the sexual and drug history of the offender3. While treatment professionals see the importance of cognition in sexual offending, little exact research has been done on it4 (cognition is an individual's perceptions, mental thought processes and reasoning). There are indications that some sex offenders may develop distorted thought patterns that help them justify their behavior however. For example, survey results have found that compared with other respondent groups, child molesters thought that sexual contact was more beneficial to the child and perceived less responsibility for their behavior, greater complicity on the child's part, and less need to punish the adult5.
             Understanding the sex offender is essential to developing rehabilitation programs. They are closely asociated with the different theories for deviant sexual behavio...