Sex offences are both frequent and traumatic (Crime and Misconduct Commission, 2003). For example, a study by the National Institute of Justice in the United States found that for a sample of 8000 women and 8000 men, 17.6% women and 3% men had experienced rape sometime during their lifetime, and that of these rape victims, 21.6% of females and 48% of males had been raped before the age of 12 years (Tjaden &Thoennes, 2006). Additionally, these authors found that amongst the adult rape victims, 32% of women and 16% of men were injured during the rape, and a total of 33% of women and 25% of men required counseling from a mental health professional following the rape (Tjaden &Thoennes, 2006). In another National Institute of Justice Study, Ashcroft, Daniels, and Hart (2003) found that in a sample of 4,023 male and female children aged between 12 and 17 years, 8.1% had been sexually assaulted. Ashcroft et al. (2003) also determined that sexual assault increased the prevalence of Post-traumatic Stress Disorder (PTSD) amongst these children by a factor of four to five fold compared with those who were not sexually assaulted.