title: Do amnesic patients with Korsakoff's syndrome use feedback when making decisions under risky conditions? An experimental investigation with the Game of Dice Task with and without feedback.
abstract: We investigated the role of feedback processing in decision making under risk conditions in 50 patients with amnesia in the course of alcoholic Korsakoff's syndrome (KS). Half of the patients were administered the Game of Dice Task (GDT) and the remaining 25 patients were examined with a modified version of the GDT in which no feedback was provided. Patients' results in the GDT and in the modified version were compared with that of 50 healthy subjects of whom 25 subjects performed the original GDT and 25 performed the modified version. While performance on the original GDT was superior to performance on the modified GDT in healthy subjects, KS patients performed similarly on both the GDT with and GDT without feedback. Performance on both task versions was correlated with categorization and set-shifting. The findings indicate that amnesic patients do not profit from receiving feedback for their decisions in explicit risk conditions.
authors.affiliation: Physiological Psychology, University of Bielefeld, P.O. Box 10 01 31, 33501 Bielefeld, Germany. m.brand@uni-bielefeld.de
authors.forename: Matthias
authors.initials: M
authors.lastname: Brand
authors.forename: Mirko
authors.initials: M
authors.lastname: Pawlikowski
authors.forename: Kirsten
authors.initials: K
authors.lastname: Labudda
authors.forename: Christian
authors.initials: C
authors.lastname: Laier
authors.forename: Nadine
authors.initials: N
authors.lastname: von Rothkirch
authors.forename: Hans J
authors.initials: HJ
authors.lastname: Markowitsch
mesh_terms: D000425:Alcohol Amnestic Disorder / Q000150:complications / Q000523:psychology*; D000647:Amnesia / Q000209:etiology / Q000523:psychology*; D003657:Decision Making; D030141:Feedback, Psychological; D005260:Female; D005715:Gambling / Q000523:psychology; D005717:Games, Experimental; D006801:Humans; D008297:Male; D008875:Middle Aged; D012306:Risk; D013647:Task Performance and Analysis