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The nature and assessment of mental contamination: A psychometric analysis


The nature and assessment of mental contamination: A psychometric analysis

Radomsky, Adam S., Rachman, S., Shafran, Roz, Coughtrey, Anna E. and Barber, Kevin C. (2013) The nature and assessment of mental contamination: A psychometric analysis. Journal of Obsessive-Compulsive and Related Disorders . ISSN 22113649 (In Press)

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Official URL: http://dx.doi.org/10.1016/j.jocrd.2013.08.003


There has been a recent expansion of interest in the concept of mental contamination. Despite a growing number of experiments and interview-based studies of mental contamination, there is a need for questionnaire-based assessment measures, and for a further understanding of the degree to which mental contamination is related to other aspects of OCD symptomatology and/or to established cognitive constructs relevant to OCD. We assessed the psychometric properties of three new measures of mental contamination (the Vancouver Obsessional Compulsive Inventory – Mental Contamination Scale, the Contamination Sensitivity Scale, and the Contamination Thought-Action Fusion Scale) in participants diagnosed with OCD (n = 57), participants diagnosed with an anxiety disorder other than OCD (n = 24) and in undergraduate student controls (n = 410). For some of these analyses, our OCD sample was subdivided into those with contamination-related symptoms and concerns (n = 30) and those whose OCD excluded concerns related to contamination fear (n = 27). Results showed that the three new scales had excellent psychometric properties, including internal consistency, convergent and divergent validity, and discriminant validity. Further, the new measures accounted for significant unique variance in OCD symptoms over and above that accounted for by depression, anxiety, traditional contact-based contamination, and OCD beliefs. Results are discussed in terms of the clinical utility of the scales, and of the nature of contamination fears in OCD.

Divisions:Concordia University > Faculty of Arts and Science > Psychology
Item Type:Article
Authors:Radomsky, Adam S. and Rachman, S. and Shafran, Roz and Coughtrey, Anna E. and Barber, Kevin C.
Journal or Publication:Journal of Obsessive-Compulsive and Related Disorders
Digital Object Identifier (DOI):10.1016/j.jocrd.2013.08.003
Keywords:Mental contamination; OCD; Assessment; Symptoms; Beliefs.
ID Code:978635
Deposited On:09 Jun 2014 14:49
Last Modified:18 Jan 2018 17:47
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