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Functional impulsivity and reinforcement sensitivity theory.

Luke D Smillie1, Chris J Jackson

  • 1School of Psychology, University of Queensland, Australia. luke@psy.uq.edu.au

Journal of Personality
|February 3, 2006
PubMed
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Functional Impulsivity (FI) relates to reward sensitivity, aligning with the Behavioral Activation System (BAS). Dysfunctional Impulsivity (DI) shows indifference to rewards or punishments, suggesting distinct impulsivity constructs.

Area of Science:

  • Psychology
  • Neuroscience
  • Behavioral Science

Background:

  • Functional Impulsivity (FI) is a descriptive concept.
  • Reinforcement Sensitivity Theory (RST) describes reward and punishment systems.
  • FI conceptually aligns with reward-reactivity in RST, involving the Behavioral Activation System (BAS) and Behavioral Inhibition System (BIS).

Purpose of the Study:

  • To integrate Dickman's FI with Gray's RST.
  • To examine the construct validity and correlates of FI.
  • To investigate the relationship between FI, Dysfunctional Impulsivity (DI), and response bias under reward and punishment.

Main Methods:

  • Study 1: Assessed construct validity and structural correlates of FI.
  • Study 2: Employed a go/no-go discrimination task with rewarding and punishing feedback.

Related Experiment Videos

  • Utilized measures of BAS, BIS, Extraversion, Neuroticism, Psychoticism, and DI.

    • Main Results:

    • FI positively correlated with BAS and Extraversion, negatively with BIS and Neuroticism.
    • FI is distinct from DI and Psychoticism.
    • FI and BAS predicted response bias toward rewarded alternatives; high DI indicated indifference to feedback.

    Conclusions:

    • Findings support the integration of FI and RST, clarifying the BAS role in reward-reactivity.
    • Distinguishes FI from DI, offering a nuanced understanding of impulsivity.
    • Suggests different motivational systems underlie FI and DI.