“…Apart from other classification systems, three types based on victim age, co-offender status and crime history show some face validity and have been frequently addressed and at least partly supported in previous studies (e.g. Bijleveld & Hendriks, 2003;Butler & Seto, 2002;Hart-Kerkhoffs, Doreleijers, Jansen, van Wijk, & Bullens, 2009;Hunter et al, 2003;Kjellgren, Wassberg, Carlberg, Langstrom, & Svedin, 2006;Parks & Bard, 2006). The victim's age is one of the most prominent criteria for the classification of sexual offenders.…”