The causes of<unk> s in people are unclear, but some research points to a possible prenatal neurodevelopmental correlation. A 2008 study analyzing the sexual fantasies of 200 heterosexual men by using the Wilson Sex Fantasy Questionnaire exam determined that males with a pronounced degree of fetish interest had a greater number of older brothers, a high 2D:4D digit ratio (which would indicate excessive prenatal estrogen exposure), and an elevated probability of being left-handed, suggesting that disturbed hemispheric brain lateralization may play a role in<unk>  attractions. Behavioral explanations propose that<unk> s are conditioned early in life, during an experience that pairs the<unk>  stimulus with intense sexual arousal. Susan Nolen-Hoeksema suggests that, once established, masturbatory fantasies about the stimulus reinforce and broaden the<unk>  arousal.
Paraphilia
Hypersexuality
Musical anhedonia
Alexithymia
Dysgraphia
Gender dysphoria
Acrophobia
Hyperreligiosity