Ilana Frydman1, Paulo Mattos2, Ricardo de Oliveira-Souza2, Murat Yücel3, Samuel R Chamberlain4, Jorge Moll2, Leonardo F Fontenelle5. 1. Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Brazil; D'Or Institute for Research and Education, Rio de Janeiro, Brazil. 2. D'Or Institute for Research and Education, Rio de Janeiro, Brazil. 3. Brain & Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Victoria, Australia. 4. Department of Psychiatry, University of Cambridge, Cambridge and Peterborough NHS Foundation Trust (CPFT), UK. 5. Obsessive, Compulsive, and Anxiety Spectrum Research Program, Institute of Psychiatry, Federal University of Rio de Janeiro, Brazil; D'Or Institute for Research and Education, Rio de Janeiro, Brazil; Brain & Mental Health Laboratory, Monash Institute of Cognitive and Clinical Neurosciences, Monash University, Victoria, Australia. Electronic address: leonardo.fontenelle@idor.org.
Abstract
BACKGROUND: Although a behavioural addiction model of obsessive-compulsive disorder (OCD) has been proposed, it is still unclear if and how self-report and neurocognitive measures of impulsivity (such as risk-taking-, reflection- and motor-impulsivities) are impaired and/or inter-related in this particular clinical population. METHODS: Seventeen OCD patients and 17 age-, gender-, education- and IQ-matched controls completed the Barratt Impulsivity Scale, the Obsessive-Compulsive Inventory-Revised, and the Beck Depression Inventory and were evaluated with the Yale-Brown Obsessive-Compulsive Scale and three computerized paradigms including reward (the Cambridge Gambling Task), reflection (the Information Sampling Task) and motor impulsivity (Stop Signal Task). RESULTS: Despite not differing from healthy controls in any neurocognitive impulsivity domain, OCD patients demonstrated increased impulsivity in a self-report measure (particularly attentional impulsivity). Further, attentional impulsivity was predicted by severity of obsessive-compulsive symptoms. CONCLUSIONS: Our findings suggest that OCD is characterized by a subjective (rather than objective) impulsivity; in addition, self-reported impulsivity was largely determined by severity of OCD symptoms.
BACKGROUND: Although a behavioural addiction model of obsessive-compulsive disorder (OCD) has been proposed, it is still unclear if and how self-report and neurocognitive measures of impulsivity (such as risk-taking-, reflection- and motor-impulsivities) are impaired and/or inter-related in this particular clinical population. METHODS: Seventeen OCDpatients and 17 age-, gender-, education- and IQ-matched controls completed the Barratt Impulsivity Scale, the Obsessive-Compulsive Inventory-Revised, and the Beck Depression Inventory and were evaluated with the Yale-Brown Obsessive-Compulsive Scale and three computerized paradigms including reward (the Cambridge Gambling Task), reflection (the Information Sampling Task) and motor impulsivity (Stop Signal Task). RESULTS: Despite not differing from healthy controls in any neurocognitive impulsivity domain, OCDpatients demonstrated increased impulsivity in a self-report measure (particularly attentional impulsivity). Further, attentional impulsivity was predicted by severity of obsessive-compulsive symptoms. CONCLUSIONS: Our findings suggest that OCD is characterized by a subjective (rather than objective) impulsivity; in addition, self-reported impulsivity was largely determined by severity of OCD symptoms.
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