PMID: 11931675Apr 5, 2002Paper

Deductive and inductive reasoning in obsessive-compulsive disorder

The British Journal of Clinical Psychology
Marie-Claude Pélissier, Kieron P O'Connor

Abstract

This study tested the hypothesis that people with obsessive-compulsive disorder (OCD) show an inductive reasoning style distinct from people with generalized anxiety disorder (GAD) and from participants in a non-anxious (NA) control group. The experimental procedure consisted of administering a range of six deductive and inductive tasks and a probabilistic task in order to compare reasoning processes between groups. Recruitment was in the Montreal area within a French-speaking population. The participants were 12 people with OCD, 12 NA controls and 10 people with GAD. Participants completed a series of written and oral reasoning tasks including the Wason Selection Task, a Bayesian probability task and other inductive tasks, designed by the authors. There were no differences between groups in deductive reasoning. On an inductive "bridging task", the participants with OCD always took longer than the NA control and GAD groups to infer a link between two statements and to elaborate on this possible link. The OCD group alone showed a significant decrease in their degree of conviction about an arbitrary statement after inductively generating reasons to support this statement. Differences in probabilistic reasoning replicated those of...Continue Reading

Citations

Sep 6, 2006·Cognitive Behaviour Therapy·Frederick AardemaPaul M G Emmelkamp
Dec 13, 2006·Cognitive Neuropsychiatry·Cordelia FineIan Gold
May 24, 2008·Journal of Behavior Therapy and Experimental Psychiatry·Marie-Claude PélissierGilles Dupuis
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Feb 1, 2005·Behaviour Research and Therapy·Frederick AardemaChristo Todorov
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