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Psychol Med. 2007 Aug;37(8):1075-84. Epub 2007 Jan 30.

A systematic review and meta-analysis of set-shifting ability in eating disorders.

Author information

1
Division of Psychological Medicine, Eating Disorders Research Unit, Department of Academic Psychiatry, King's College, Guy's Hospital, London, UK. marion.roberts@iop.kcl.ac.uk

Abstract

BACKGROUND:

The aim was to critically appraise and synthesize the literature relating to set-shifting ability in eating disorders. PsycINFO, Medline, and Web of Science databases were searched to December 2005. Hand searching of eating-disorder journals and relevant reference sections was also undertaken.

METHOD:

The 15 selected studies contained both eating disorder and healthy control groups, and employed at least one of the following six neuropsychological measures of set-shifting ability; Trail Making Test (TMT), Wisconsin Card Sort Test (WCST), Brixton task, Haptic Illusion, CatBat task, or the set-shifting subset of the Cambridge Neuropsychological Test Automated Battery (CANTAB). The outcome variable was performance on the set-shifting aspect of the task. Pooled standardized mean differences (effect sizes) were calculated.

RESULTS:

TMT, WCST, CatBat and Haptic tasks had sufficient sample sizes for meta-analysis. These four tasks yielded acceptable pooled standardized effect sizes (0.36; TMT -1.05; Haptic) with moderate variation within studies (as measured by confidence intervals). The Brixton task showed a small pooled mean difference, and displayed more variation between sample results. The effect size for CANTAB set shifting was 0.17.

CONCLUSION:

Problems in set shifting as measured by a variety of neuropsychological tasks are present in people with eating disorders.

PMID:
17261218
DOI:
10.1017/S0033291707009877
[Indexed for MEDLINE]
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