- Amitai Abramovitch ORCID:orcid.org/0000-0001-9640-09701,
- Gideon Anholt2,
- Sagi Raveh-Gottfried2,
- Naama Hamo3 &
- …
- Jonathan S. Abramowitz4
6044Accesses
37Citations
99 Altmetric
16Mentions
Abstract
Obsessive compulsive disorder (OCD) is associated with a moderate degree of underperformance on cognitive tests, including deficient processing speed. However, despite little research focusing on Intelligence Quotient (IQ) in OCD, it has long been speculated that the disorder is associated with elevated intellectual capacity. The present meta-analytic study was, therefore, conducted to quantitatively summarize the literature on IQ in OCD systematically. We identified 98 studies containing IQ data among individuals with OCD and non-psychiatric comparison groups, and computed 108 effect sizes for Verbal IQ (VIQ,n = 55), Performance IQ (PIQ,n = 13), and Full Scale IQ (FSIQ,n = 40). Across studies, small effect sizes were found for FSIQ and VIQ, and a moderate effect size for PIQ, exemplifying reduced IQ in OCD. However, mean IQ scores across OCD samples were in the normative range. Moderator analyses revealed no significant moderating effect across clinical and demographic indices. We conclude that, although lower than controls, OCD is associated with normative FSIQ and VIQ, and relatively lowered PIQ. These results are discussed in light of neuropsychological research in OCD, and particularly the putative impact of reduced processing speed in this population. Recommendations for utilization of IQ tests in OCD, and directions for future studies are offered.
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Authors and Affiliations
Department of Psychology, Texas State University, San Marcos, TX, 78666, USA
Amitai Abramovitch
Department of Psychology, Ben Gurion University, Beer Sheva, Israel
Gideon Anholt & Sagi Raveh-Gottfried
Department of Psychology, Ruppin Academic Center, Emek Hefer, Israel
Naama Hamo
Department of Psychology and Neuroscience, University of North Carolina at Chapel Hill, Chapel Hill, NC, USA
Jonathan S. Abramowitz
- Amitai Abramovitch
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- Gideon Anholt
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- Sagi Raveh-Gottfried
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- Naama Hamo
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- Jonathan S. Abramowitz
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Correspondence toAmitai Abramovitch.
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Abramovitch, A., Anholt, G., Raveh-Gottfried, S.et al. Meta-Analysis of Intelligence Quotient (IQ) in Obsessive-Compulsive Disorder.Neuropsychol Rev28, 111–120 (2018). https://doi.org/10.1007/s11065-017-9358-0
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