DA receptor agonists (Purves et al , 2004 . There are also some data which strongly suggest that genetics does play a role in OCD etiology , though the specific genetic abnormality responsible has not yet been identified (Stahl , 2000 . In one case study in Plante 's book (2005 , Hector , the subject , had several paternal relatives that showed symptoms suggesting that they may also have OCD , thus lending support to the hypothesis that heritable biological abnormalities may indeed be among the causes of...











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