Testing the Mediating Effects of Obsessive Beliefs in Internet-Based Cognitive Behaviour Therapy for Obsessive-Compulsive Disorder: Results from a Randomized Controlled Trial

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Testing the Mediating Effects of Obsessive Beliefs in Internet-Based Cognitive Behaviour Therapy for Obsessive-Compulsive Disorder : Results from a Randomized Controlled Trial

Andersson, Erik (author): Karolinska Institutet,Karolinska Institute, Sweden

Ljotsson, Brjann (author): Karolinska Institutet,Karolinska Institute, Sweden

Hedman, Erik (author): Karolinska Institutet,Karolinska Institute, Sweden

Hesser, Hugo, 1982- (author): Linköpings universitet,Psykologi,Filosofiska fakulteten

Enander, Jesper (author): Karolinska Institutet,Karolinska Institute, Sweden

Kaldo, Viktor (author): Karolinska Institutet,Karolinska Institute, Sweden

Andersson, Gerhard (author): Linköpings universitet,Karolinska Institutet,Psykologi,Filosofiska fakulteten,Karolinska Institute, Sweden

Lindefors, Nils (author): Karolinska Institutet,Karolinska Institute, Sweden

Ruck, Christian (author): Karolinska Institutet,Karolinska Institute, Sweden

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2014-11-23
2015
English.
In: Clinical Psychology and Psychotherapy. - : Wiley-Blackwell. - 1063-3995 .- 1099-0879. ; 22:6, s. 722-732

Related links:: https://urn.kb.se/re...; show more...; https://doi.org/10.1...; https://urn.kb.se/re...; http://kipublication...; https://urn.kb.se/re...; show less...

Journal article (peer-reviewed)

Abstract Subject headings

Although cognitive interventions for obsessive-compulsive disorder (OCD) have been tested in randomized trials, there are few trials that have tested the specific mechanisms of cognitive interventions, i.e. how they achieve their effects. In this study, we aimed to investigate the mediating effects of a short cognitive intervention in the treatment of OCD and used data from a recently conducted randomized controlled trial where 101 participants were allocated to either Internet-based CBT (ICBT) or to a control condition. Obsessive beliefs were measured at pre-treatment, at the time they had received the cognitive intervention, and also at post-treatment. Weekly OCD symptoms were measured throughout the 10 weeks of treatment. We hypothesized that (1) the ICBT group would have greater reductions in obsessive beliefs (controlling for change in OCD symptoms) after completing the cognitive intervention, and that (2) this reduction would, in turn, predict greater OCD symptom reduction throughout the rest of the treatment period. Contrary to our expectations, the longitudinal mediation analysis indicated that (1) being randomized to ICBT actually increased the degree of obsessive beliefs after receiving the cognitive intervention at weeks 1-3, and (2) increase in obsessive beliefs predicted better outcome later in treatment. However, when repeating the analysis using cross-sectional data at post-treatment, the results were in line with the initial hypotheses. Results were replicated when the control condition received ICBT. We conclude that, although obsessive beliefs were significantly reduced at post-treatment for the ICBT group, early increase rather than decrease in obsessive beliefs predicted favourable outcome. Copyright (C) 2014 John Wiley & Sons, Ltd.

Subject headings

SAMHÄLLSVETENSKAP -- Psykologi -- Tillämpad psykologi (hsv//swe)
SOCIAL SCIENCES -- Psychology -- Applied Psychology (hsv//eng)
MEDICIN OCH HÄLSOVETENSKAP -- Medicinska och farmaceutiska grundvetenskaper (hsv//swe)
MEDICAL AND HEALTH SCIENCES -- Basic Medicine (hsv//eng)

Keyword

Internet
Mediation
Cognitive interventions
Cognitive therapy
Cognitive-behaviour therapy
Obsessive-compulsive disorder
Psychology
Psykologi

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By the author/editor: Andersson, Erik; Ljotsson, Brjann; Hedman, Erik; Hesser, Hugo, 19 ...; Enander, Jesper; Kaldo, Viktor; show more...; Andersson, Gerha ...; Lindefors, Nils; Ruck, Christian; show less...

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SOCIAL SCIENCES: SOCIAL SCIENCES; and Psychology; and Applied Psycholo ...

MEDICAL AND HEALTH SCIENCES: MEDICAL AND HEAL ...; and Basic Medicine

Articles in the publication: Clinical Psychol ...

By the university: Linnaeus University; Örebro University; Karolinska Institutet; Linköping University

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