The term "paraphilia" describes a disorder of sexual preference and is equated with “sexual deviance” by many authors. The types listed in the DSM-IV-TR of paraphilia correspond largely to the disorders of sexual preference of ICD-10. Paraphilia is a chronic preference for a sexual practice that does not serve the reproduction and is lived either in fantasy or through sexual activity. According to DSM-IV-TR this includes repeated strong sexual impulses and sexually exciting fantasies relating to unusual objects, activities or situations that cause clinically significant distress or impairment in social, occupational or other important areas of functioning (Nedopil & Müller, 2012). Paraphilia includes pedophilia as well. The ICD-10 defines pedophilia (F 65.4) as a "persistent or dominant preference for sexual activity with one or more children prior to puberty." In the interests of those affected and the public, the differentiated and viable diagnosis of this disorder is of great importance. Current diagnostic approaches base on attentional processes which are associated with a deviant sexual orientation in order to make objective diagnostic statements (Thornton & Laws, 2009).?In our working group we use eye movement measurements, magnetic resonance imaging and virtual reality to develop new diagnostic methods.