کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
892563 | 914088 | 2009 | 6 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Impulsivity in decision-making: An event-related potential investigation Impulsivity in decision-making: An event-related potential investigation](/preview/png/892563.png)
Impulsive individuals make risky choices, motivated more by immediate reward than potential long-term negative consequences. We used event-related potentials (ERPs) to study the impact of reward and punishment sensitivity in impulsivity on risky decision-making in a two-card choice task in groups of 14 high and 14 low impulsive undergraduates formed by a median split on the Barratt Impulsiveness Scale score. The high impulsives had a larger P3 and the low impulsives a smaller P3 to the cards when making a low-risk choice suggesting that the high-risk option was the default choice of the high impulsives and the low-risk choice the default for the low impulsives. The low, but not the high impulsives had a larger error-related negativity (ERN) following high-risk choice indicating that the low impulsives evaluated the risky choice as a poor decision. The results indicate that high impulsive individuals are biased towards immediate reward during option evaluation but are less sensitive to the negative consequences of their choices.
Journal: Personality and Individual Differences - Volume 46, Issue 3, February 2009, Pages 303–308