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Impulsivity and speed-accuracy tradeoffs in information processing.

S J Dickman1, D E Meyer

  • 1Department of Psychology, University of Texas, Austin 78712.

Journal of Personality and Social Psychology
|February 1, 1988
PubMed
Summary

Individuals high in impulsivity are not always faster at the cost of accuracy. Research shows high impulsives can be more accurate when processing information rapidly, challenging simple speed-accuracy tradeoff models.

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Area of Science:

  • Cognitive Psychology
  • Behavioral Neuroscience
  • Personality Psychology

Background:

  • Impulsivity is a personality trait theoretically linked to cognitive processing speed and accuracy.
  • Existing research lacks strong evidence for a direct association between impulsivity and speed-accuracy tradeoffs.

Purpose of the Study:

  • To investigate the relationship between individual differences in impulsivity and the willingness to sacrifice accuracy for speed.
  • To examine if high impulsivity consistently leads to faster but less accurate information processing.

Main Methods:

  • Three experiments were conducted using self-reported impulsivity levels (high, medium, low).
  • Participants performed a visual-comparison task under varying speed-accuracy payoff conditions.
  • Sternberg's additive-factor method was employed to analyze information processing stages.

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Main Results:

  • High impulsives were faster and less accurate overall, but processed at least one stage as slowly and accurately as others.
  • When forced to process information rapidly, high impulsives were more accurate than low impulsives.
  • The response execution stage was found to be performed as slowly and accurately by high impulsives.

Conclusions:

  • A simple speed-accuracy tradeoff model is insufficient to explain impulsive cognitive functioning.
  • The relationship between impulsivity and cognitive performance is more complex than a direct speed-accuracy compromise.