?url_ver=Z39.88-2004&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Adc&rft.title=An+Evolutionary+Hypothesis+for+Obsessive-Compulsive+Disorder%3A+A+Psychological+Immune+System%3F&rft.creator=Abed%2C+Riadh+T&rft.creator=de+Pauw%2C+Karel+W&rft.subject=Evolutionary+Psychology&rft.description=A+new+hypothesis+is+presented+within+the+framework+of+evolutionary+psychology+that+attempts+to+explain+the+origins+of+obsessive-compulsive+disorder.++It+is+suggested+that+obsessions+and+compulsions+originate+from+the+overactivity+of+a+mental+module+that+the+majority+of+humans+possess+and+has+the+function+of+generating+risk+scenarios+without+voluntary+intervention.++It+is+hypothesised+that+obsessional+phenomena+function+as+an+off-line+risk+avoidance+process%2C+designed+to+lead+to+risk+avoidance+behaviour+at+a+future+time%2C+thus+distinguishing+it+from+anxiety+and+related+phenomena+as+on-line+emotional+states%2C+designed+to+lead+to+the+avoidance+of+immediate+and+direct+risks.++Finally%2C+the+hypothesis+makes+a+number+of+specific+predictions+that+are+testable+and+refutable.++It+is+contended+that+the+present+hypothesis+if+supported+by+empirical+evidence+could+serve+as+a+basis+for+future+research+on+this+important+disorder.&rft.publisher=IOS+Press&rft.contributor=Mayes%2C+Andrew&rft.date=1999&rft.type=Journal+(Paginated)&rft.type=PeerReviewed&rft.format=text%2Fhtml&rft.identifier=http%3A%2F%2Fcogprints.org%2F1147%2F1%2Focd-final.htm&rft.identifier=++Abed%2C+Riadh+T+and+de+Pauw%2C+Karel+W++(1999)+An+Evolutionary+Hypothesis+for+Obsessive-Compulsive+Disorder%3A+A+Psychological+Immune+System%3F++%5BJournal+(Paginated)%5D+++++&rft.relation=http%3A%2F%2Fcogprints.org%2F1147%2F