Construct Validity of the Iowa Gambling Task |
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Authors: | Melissa T Buelow Julie A Suhr |
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Institution: | (1) Department of Psychology, Ohio University, Athens, OH, USA |
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Abstract: | The Iowa Gambling Task (IGT) was created to assess real-world decision making in a laboratory setting and has been applied
to various clinical populations (i.e., substance abuse, schizophrenia, pathological gamblers) outside those with orbitofrontal
cortex damage, for whom it was originally developed. The current review provides a critical examination of lesion, functional
neuroimaging, developmental, and clinical studies in order to examine the construct validity of the IGT. The preponderance
of evidence provides support for the use of the IGT to detect decision making deficits in clinical populations, in the context
of a more comprehensive evaluation. The review includes a discussion of three critical issues affecting the validity of the
IGT, as it has recently become available as a clinical instrument: the lack of a concise definition as to what aspect of decision
making the IGT measures, the lack of data regarding reliability of the IGT, and the influence of personality and state mood
on IGT performance. |
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Keywords: | Iowa gambling task Decision making Validity Reliability Executive function |
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