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| Research article summary (published 27 Feb 2002): |
Deductive and inductive reasoning in obsessive-compulsive disorder.
Full Abstract
OBJECTIVES:
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.
DESIGN:
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.
METHODS:
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.
RESULTS:
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 previous authors.
CONCLUSIONS:
The results pinpoint the importance of examining inference processes in people with OCD in order to further refine the clinical applications of behavioural-cognitive therapy for this disorder.
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Author information
Author/s: Pélissier, Marie-Claude (MC); O'Connor, Kieron P (KP);
Affiliation: Centre de Recherche Fernand-Seguin, 7331 Hochelaga, Montréal, Québec, H1N 3V2, Canada. mcpelissier(-atsign-)crfs.umontreal.ca
Journal and publication information
Publication Type: Clinical Trial; Controlled Clinical Trial; Journal Article
Journal: The British journal of clinical psychology / the British Psychological Society (Br J Clin Psychol), published in England. (Language: eng)
Reference: 2002-Mar; vol 41 (issue Pt 1) : pp 15-27
Dates: Created 2002/04/04; Completed 2002/06/04; Revised 2004/11/17;
PMID: 11931675, status: MEDLINE (last retrieval date: 11/6/2008)
Sourced from the National Library of Medicine. Abstract text and other information may be subject to copyright.
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