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Out of control?: Inhibition processes in eating disorders from a personality and cognitive perspective
Author(s) -
Claes Laurence,
Mitchell James E.,
Vandereycken Walter
Publication year - 2012
Publication title -
international journal of eating disorders
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.785
H-Index - 138
eISSN - 1098-108X
pISSN - 0276-3478
DOI - 10.1002/eat.20966
Subject(s) - impulsivity , stroop effect , psychology , eating disorders , response inhibition , neuropsychology , cognitive inhibition , cognition , executive functions , developmental psychology , personality , wisconsin card sorting test , clinical psychology , psychiatry , social psychology
Objective: The present study examined the role of “a breakdown in inhibition” as a mechanism to explain differences in impulsivity between restrictive and bingeing/purging eating disorders (ED). Two types of inhibition (i.e., executive and reactive inhibition) were assessed by means of personality and neuropsychological tests. Method: Forty‐eight female in patients with ED completed the Effortful Control Scale, the BISBAS scales, and a set of neuropsychological tests. Results: The results showed that executive inhibition measures were able to differentiate restrictive from bingeing/purging ED subtypes. Patients with ED and bingeing/purging behavior scored significantly lower on the Effortful Control Scale, needed more time to finish the Trail Making Test/STROOP, and showed more reaction time variability on the Go No‐Go task. We did not find significant associations between personality and neuropsychological measures of executive/reactive inhibition. Discussion: Insight in the breakdown of inhibition in bingeing/purging patients can increase our understanding of impulse‐control disorders and guide the development of tools to improve effortful control. © 2011 by Wiley Periodicals, Inc. (Int J Eat Disord 2012)