Impulsive individuals make risky decisions, motivated more by immediate reward rather than by the potential long-term negative consequences of their choices, suggesting heightened sensitivity to reward and/or reduced sensitivity to negative outcomes ( Ainslie, 1975).
Impulsivity is a personality dimension described as “acting without thinking” and is associated with several psychiatric and personality disorders including mania, substance abuse, and antisocial personality disorder ( Moeller et al., 2001).
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. The low, but not the high impulsives had a larger error-related negativity following high-risk choice indicating that the low impulsives evaluated the risky choice as a poor decision. 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. We used event-related potentials 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.
Impulsive individuals make risky choices, motivated more by immediate reward than potential long-term negative consequences.
0 kommentar(er)
