title: Inhibitory control and decision making under risk in bulimia nervosa and binge-eating disorder.
abstract: OBJECTIVE
  To investigate neuropsychological mechanisms of impulsivity in patients with bulimia nervosa (BN) and binge-eating disorder (BED).
  
  
  METHODS
  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).
  
  
  RESULTS
  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.
  
  
  CONCLUSIONS
  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.
authors.affiliation: Department of General Internal Medicine and Psychosomatics, University of Heidelberg, Heidelberg, Germany.
authors.forename: Mudan
authors.initials: M
authors.lastname: Wu
authors.forename: Katrin Elisabeth
authors.initials: KE
authors.lastname: Giel
authors.forename: Mandy
authors.initials: M
authors.lastname: Skunde
authors.forename: Kathrin
authors.initials: K
authors.lastname: Schag
authors.forename: Gottfried
authors.initials: G
authors.lastname: Rudofsky
authors.forename: Martina
authors.initials: M
authors.lastname: de Zwaan
authors.forename: Stephan
authors.initials: S
authors.lastname: Zipfel
authors.forename: Wolfgang
authors.initials: W
authors.lastname: Herzog
authors.forename: Hans-Christoph
authors.initials: HC
authors.lastname: Friederich
mesh_terms: D000328:Adult; D056912:Binge-Eating Disorder / Q000523:psychology*; D001828:Body Image; D052018:Bulimia Nervosa / Q000523:psychology*; D016022:Case-Control Studies; D003657:Decision Making; D005260:Female; D006801:Humans; D007175:Impulsive Behavior; D008297:Male; D009765:Obesity / Q000523:psychology
keywords: binge-eating disorder; bulimia nervosa; decision making; impulsivity; inhibitory control; neuropsychology