Article

Cognitive functioning in compulsive hoarding

Department of Psychiatry and Behavior Sciences, Johns Hopkins University School of Medicine, 600 North Wolfe St., Baltimore, MD 21287, USA.
Journal of anxiety disorders (Impact Factor: 2.68). 08/2011; 25(8):1139-44. DOI: 10.1016/j.janxdis.2011.08.005
Source: PubMed

ABSTRACT

The aim of this study is to determine whether neurocognitive performance distinguishes individuals with compulsive hoarding (CH) from those with obsessive-compulsive disorder (OCD). Compared to control subjects, OCD patients and CHs scored significantly worse on the Serial Reaction Time Task suggesting disturbed implicit memory in both patient groups. On the Iowa Gambling Task, an overall learning progression difference over time was found between the CHs, OCD group, and control subjects, suggesting differences in decision-making between the groups. The groups did not differ in performance on the Stop Signal Reaction Time Task (motor inhibition). This study found evidence for impaired implicit memory in CHs, but also in OCD patients, albeit less severe. There was evidence that OCD patients learned more slowly on a decision-making task than CHs and control subjects. This latter finding provides some evidence to suggest that CH and OCD have, at least on this one measure, differing cognitive substrates.

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    • "A recent account points to shared neuropsychological and neurobiological impairments between HD and ADHD (Lynch, McGillivray, Molding, & Byrne, 2015). Neuropsychological findings in HD have been mixed, but several studies have linked HD to impairments in visuospatial memory (Blom et al., 2011; Hartl et al., 2004; Testa, Pantellis, & Fontenelle, 2011) and sustained attention (Grisham, Brown, Savage, Steketee, & Barlow, 2007; Tolin, Villavicencio , Umbach, & Kurtz, 2011; see Woody, Kellman-McFarlane, & Welsted, 2014 for a review). Similarly, adult ADHD is characterized by impairments in memory and sustained attention, among other "
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    • "Worse performance in spatial planning using similar tasks has been previously reported in mixed groups of OCD patients (Veale et al., 1996; Purcell et al., 1998; Watkins et al., 2005) and in hoarders (Grisham et al., 2010). Similar inhibitory difficulties were reported in non-hoarding OCD (Chamberlain et al., 2006), although a recent study failed to find SSRT difficulties in a group of non-hoarding OCD and a group of hoarders where just over half had OCD (Blom et al., 2011). Current results lend converging validity for difficulties in these two domains across both OCD hoarders and those with hoarding disorder. "
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