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Gepubliceerd in: Cognitive Therapy and Research 2/2010

01-04-2010 | Original Article

Do Symptoms of Generalized Anxiety and Obsessive-Compulsive Disorder Share Cognitive Processes?

Auteurs: Thomas A. Fergus, Kevin D. Wu

Gepubliceerd in: Cognitive Therapy and Research | Uitgave 2/2010

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Abstract

There is tremendous interest in understanding the role of cognitive processes within generalized anxiety disorder (GAD) and obsessive-compulsive disorder (OCD). Regarding one process, intolerance of uncertainty (IU), extant data provide equivocal conclusions as to whether it shares a specific relation with either disorder. This study tested the specificity of IU and other cognitive processes, including negative problem orientation, responsibility and threat estimation, perfectionism and certainty, and importance and control of thoughts, in relation to symptoms of GAD and OCD in a large nonclinical sample. All cognitive processes except importance and control of thoughts (ICT) shared comparable relations with symptoms of both disorders and IU was the only cognitive process to predict unique variance—that above and beyond the other cognitive processes—in both GAD and OCD symptoms. We discuss the implications of these findings for conceptualizing points of convergence and divergence between the symptoms of two disorders that historically have shown meaningful overlap.
Voetnoten
1
Although evidence suggests that hoarding may not be a specific symptom of OCD (e.g., Steketee and Frost 2003; Wu and Watson 2005), the hoarding subscale was included in the OCI-R total score to be consistent with usual practice.
 
2
Group means are presented as T scores to make clearer comparisons between the current groups and other large normative group who completed the variables. Normative data to calculate T scores were obtained from: Hajcak et al. 2004; Holaway et al. 2006; Obsessive Compulsive Cognitions Working Group 2005; Robichaud and Dugas 2005a; Watson et al. 1988. The mathematical equation used for conversion of each scale score was: T score = [(M current group – M normative group)/SD normative group] x 10 + 50. Thus, T scores have a M of 50 with a SD of 10.
 
3
The recommended cutoff score of 65 on the PSWQ (which optimally balances sensitivity and specificity as recommended by Fresco et al. 2003) and a cutoff score of 4 on the OCI-R Obsessing subscale (which differentiates OCD respondents from non-anxious controls better than does the OCI-R total scale; Foa et al. 2002) were used to determine clinically elevated scores.
 
4
The correlations between the PSWQ and the OCI-R in these analyses were: (1) examining the IUS (r = .18, P < .01), (2) examining the OBQ-RT (r = .12, P < .05), (3) examining the OBQ-ICT (r = .11, P < .05), and (4) examining the OBQ-PC (r = .13, P < .01).
 
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Metagegevens
Titel
Do Symptoms of Generalized Anxiety and Obsessive-Compulsive Disorder Share Cognitive Processes?
Auteurs
Thomas A. Fergus
Kevin D. Wu
Publicatiedatum
01-04-2010
Uitgeverij
Springer US
Gepubliceerd in
Cognitive Therapy and Research / Uitgave 2/2010
Print ISSN: 0147-5916
Elektronisch ISSN: 1573-2819
DOI
https://doi.org/10.1007/s10608-009-9239-9

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