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  Performance of healthy participants on the Iowa Gambling Task

Steingroever, H., Wetzels, R., Horstmann, A., Neumann, J., & Wagenmakers, E.-J. (2013). Performance of healthy participants on the Iowa Gambling Task. Psychological Assessment, 25(1), 180-193. doi:10.1037/a0029929.

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Steingroever_2012_Performance.pdf (Preprint), 849KB
 
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 Urheber:
Steingroever, Helen1, Autor
Wetzels, Ruud1, Autor
Horstmann, Annette2, 3, Autor           
Neumann, Jane2, 3, Autor           
Wagenmakers, Eric-Jan1, Autor
Affiliations:
1Department of Psychology, University of Amsterdam, the Netherlands, ou_persistent22              
2Department Neurology, MPI for Human Cognitive and Brain Sciences, Max Planck Society, ou_634549              
3Integrated Research and Treatment Center Adiposity Diseases, University of Leipzig, Germany, ou_persistent22              

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Schlagwörter: Choice behavior; Frequency of losses; Between-group variability; Within-group variability; Exploration–exploitation
 Zusammenfassung: The Iowa Gambling Task (IGT; Bechara, Damasio, Damasio, & Anderson, 1994) is often used to assess decision-making deficits in clinical populations. The interpretation of the results hinges on 3 key assumptions: (a) healthy participants learn to prefer the good options over the bad options; (b) healthy participants show homogeneous choice behavior; and (c) healthy participants first explore the different options and then exploit the most profitable ones. Here we test these assumptions using 2 extensive literature reviews and analysis of 8 data sets. The results show that all 3 assumptions may be invalid; that is, (a) healthy participants often prefer decks with infrequent losses; (b) healthy participants show idiosyncratic choice behavior; and (c) healthy participants do not show a systematic decrease in the number of switches across trials. Our findings question the prevailing interpretation of IGT data and suggest that, in future applications of the IGT, key assumptions about performance of healthy participants warrant close scrutiny.

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Sprache(n): eng - English
 Datum: 2012-09-172013
 Publikationsstatus: Erschienen
 Seiten: -
 Ort, Verlag, Ausgabe: -
 Inhaltsverzeichnis: -
 Art der Begutachtung: Expertenbegutachtung
 Identifikatoren: DOI: 10.1037/a0029929
 Art des Abschluß: -

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Titel: Psychological Assessment
  Kurztitel : Psychol Assess
Genre der Quelle: Zeitschrift
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Ort, Verlag, Ausgabe: Arlington, VA : American Psychological Association
Seiten: - Band / Heft: 25 (1) Artikelnummer: - Start- / Endseite: 180 - 193 Identifikator: ISSN: 1040-3590
CoNE: https://pure.mpg.de/cone/journals/resource/1040-3590