Authors
David Parkhurst, Christopher Gelety, Jacob Greenhalgh, Melissa Birkett
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Abstract
Affective decision-making is mediated by the ventromedial
prefrontal cortex and utilizes emotional experience when making
decisions based on reward and punishment. It is commonly assessed
using the Iowa Gambling Task (IGT). Past research has shown deficits
in IGT performance among binge-drinking adolescents when
compared to other types of non-binge drinkers. This study sought to
expand this line of research to include young adults. In addition, this
study compared an open source version of the IGT (PEBL) to a
standard commercial (Psychological Assessment Resources, or PAR)
version in order to assess the validity of the freeware version. As
hypothesized, there was no difference in performance between IGT
versions, nor did performance between types of drinkers differ based
on IGT version. Conversely, there was no predicted main effect of
drinking behavior on IGT performance. These results support the
PEBL IGT as a valid measure of affective decision-making. However,
limitations of this particular study and the need for further research on
the convergent and criterion validity of the PEBL IGT are discussed.
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How to cite:
Parkhurst,
D. K., Gelety, C., Greenhalgh, J., and Birkett, M. (2014). Differences
in affective decision-making between types of drinkers assessed by two
versions of the Iowa gambling Task. PEBL Technical Report Series
[On-line] #2014-01.
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 Updating... Ċ Shane Mueller, Feb 4, 2014, 8:54 PM
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