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1 results

  • Central coherence in eating disorders: a systematic review

  • C. Lopez, K. Tchanturia, D. Stahl, J. Treasure
  • Journal:
    Psychological Medicine / Volume 38 / Issue 10 / October 2008
    Published online by Cambridge University Press:
    30 April 2008, pp. 1393-1404
  • Background

    This review systematically appraised the research evidence for local versus global information processing to test the hypothesis that people with eating disorders (ED) had weak central coherence.

    Method

    Searches on Medline, EMBASE, PsycINFO and ISI Web of Science databases were conducted in November 2006 and subsequently updated in September 2007. Each search was conducted in two steps: (1) neuropsychological tasks measuring central coherence and (2) words related to cognitive functioning in eating disorders. Data were summarized in a meta-analysis if the number of studies for a given test was >5.

    Results

    Data were extracted from 16 studies. Meta-analyses were conducted for four tasks obtaining moderate effect sizes. The majority of studies found global processing difficulties across the ED spectrum. The results are less clear regarding local processing.

    Conclusions

    People with ED have difficulties in global processing. It is less certain as to whether they have superior local processing. Currently, there is insufficient evidence to refute the weak central coherence hypothesis.