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Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment 3/2017

22-04-2017

Modifying Obsessive-Compulsive Beliefs about Controlling One’s Thoughts

Auteurs: Eileen P. Stech, Jessica R. Grisham

Gepubliceerd in: Journal of Psychopathology and Behavioral Assessment | Uitgave 3/2017

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Abstract

Cognitive models of obsessive-compulsive disorder propose that beliefs about the importance of and need to control thoughts (ICT) are central to the maintenance of the disorder. Cognitive Bias Modification for Interpretation (CBM-I) can be used to experimentally test this theory and may also have clinical utility as an adjunct therapeutic tool. The current study extended previous research to investigate whether two CBM-I sessions (one within and one outside the laboratory) would augment effects on obsessive-compulsive beliefs and behavior. We randomly allocated undergraduate participants high in ICT beliefs to a Positive (n = 30) or Control (n = 36) CBM-I condition and conducted multi-modal assessments immediately following the first training and at one-week follow-up. As predicted, participants in the Positive condition reported a reduction in obsessive-compulsive beliefs from baseline to follow-up (partial η 2 = .42), whereas those in the Control condition did not. Participants responded more adaptively to the ICT relevant stressor task at follow-up compared to post-intervention, but there was no significant difference between conditions. Likewise, participants reported a reduction in obsessive symptoms over time that did not differ between conditions. The findings are considered in light of cognitive models of OCD, and clinical implications are discussed.

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Voetnoten
1
The pattern of results remained the same when paid participants were included, so participants were combined in all analyses.
 
2
Following the suggestion of an anonymous reviewer, we conducted an exploratory moderator analysis post hoc to assess if the effect of condition on change in ICT beliefs differed according to visual imagery ability as measured by the VVIQ. There was no significant interaction of condition and VVIQ, b = .16, 95% CI [−.72, 1.03], t = .36, p = .72.
 
3
When the full OCI-R was analysed in the same way the pattern of results remained the same: there was a main effect of time, F(1, 60) = 16.19, p < .001, partial \( {\eta}^2 \)= .21, indicating that averaged across conditions an overall reduction in symptoms was reported from baseline (M = 21.11, SD = 11.70) to follow-up (M = 17.39, SD = 12.40). A significant interaction effect was not found for the full OCI-R, p = .71, partial \( {\eta}^2 \)= .002.
 
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Metagegevens
Titel
Modifying Obsessive-Compulsive Beliefs about Controlling One’s Thoughts
Auteurs
Eileen P. Stech
Jessica R. Grisham
Publicatiedatum
22-04-2017
Uitgeverij
Springer US
Gepubliceerd in
Journal of Psychopathology and Behavioral Assessment / Uitgave 3/2017
Print ISSN: 0882-2689
Elektronisch ISSN: 1573-3505
DOI
https://doi.org/10.1007/s10862-017-9603-0