Inhibitory control and decision making under risk in bulimia nervosa and binge‐eating disorder. Issue 7 (3rd June 2013)

• Record Type: Journal Article
• Authors: Wu, Mudan; Giel, Katrin Elisabeth; Skunde, Mandy; Schag, Kathrin; Rudofsky, Gottfried; de, Martina; Zipfel, Stephan; Herzog, Wolfgang; Friederich, Hans‐Christoph
• Is Part Of: International journal of eating disorders. Volume 46:Issue 7(2013:Nov.)
• Page Start: 721
• Page End: 728
• Publication Date: 2013-06-03
• Subjects: Appetite disorders -- Periodicals; Ingestion disorders -- Periodicals; Eating disorders -- Periodicals; 616.8526
• DOI: 10.1002/eat.22143
• Languages: English
• ISSNs: 0276-3478

Abstract

<abstract abstract-type="main"> <title>ABSTRACT</title> <sec id="eat22143-sec-0001" sec-type="section"> <title>Objective</title> <p>To investigate neuropsychological mechanisms of impulsivity in patients with bulimia nervosa (BN) and binge‐eating disorder (BED).</p> </sec> <sec id="eat22143-sec-0002" sec-type="section"> <title>Method</title> <p>Nineteen BN patients and 31 age‐ and body‐mass‐index (BMI)‐matched healthy controls (c‐BN) as well as 54 overweight and obese BED patients and 43 age‐ and BMI‐matched healthy controls (c‐BED) were investigated using an inhibitory control task (stop signal task, SST) and a decision‐making under risk task (game of dice task, GDT).</p> </sec> <sec id="eat22143-sec-0003" sec-type="section"> <title>Results</title> <p>Compared to c‐BN, BN patients demonstrated significant greater stop signal reaction times in the SST, but no differences for the frequency of risky decisions in the GDT. BED patients did not differ from c‐BED in the SST or the GDT.</p> </sec> <sec id="eat22143-sec-0004" sec-type="section"> <title>Discussion</title> <p>BN but not BED patients differed from their respective control groups concerning the "stopping" component of impulsivity. These differences in motor inhibition may contribute to the behavioral distinctions in binge‐eating behavior between BN and BED. © 2013 Wiley Periodicals, Inc. <bold><italic>(Int J Eat Disord 2013; 46:721–728)</italic></bold></p> </sec> </abstract>