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Choice impulsivity: Definitions, measurement issues, and clinical implications.

Kristen R Hamilton1, Marci R Mitchell2, Victoria C Wing3

  • 1Department of Psychology, Maryland Neuroimaging Center, Center for Addictions, Personality, and Emotion Research, Maryland Neuroimaging Center, University of Maryland.

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This summary is machine-generated.

Choice impulsivity (CI), preferring smaller sooner rewards, is key in psychiatric disorders. The International Society for Research on Impulsivity recommends standardized CI measures across species for better clinical understanding.

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Area of Science:

  • Neuroscience
  • Psychiatry
  • Behavioral Science

Background:

  • Impulsivity is a complex trait linked to numerous psychiatric conditions.
  • Defining core aspects of impulsivity, such as choice impulsivity (CI), is crucial for clinical assessment and understanding.
  • Choice impulsivity involves preferring smaller, immediate rewards over larger, delayed rewards.

Purpose of the Study:

  • To define and standardize the assessment of choice impulsivity (CI) across species.
  • To provide recommendations for measuring CI in both preclinical and clinical settings.
  • To harmonize CI assessment methods in animal models and human studies.

Main Methods:

  • Review and description of commonly used preclinical and clinical behavioral tasks for assessing CI.
  • Discussion of various methods for calculating CI indices (e.g., area-under-the-curve, indifference point, discounting curve steepness).
  • Consideration of differences between self-report and behavioral assessments of CI.

Main Results:

  • Identification of key considerations for selecting appropriate CI tasks.
  • Analysis of the properties of specific behavioral tasks used in research.
  • Discussion on the nuances of calculating CI indices.

Conclusions:

  • The International Society for Research on Impulsivity (InSRI) recommends incorporating CI measures into human impulsivity studies.
  • Preclinical studies of impulsivity should include CI assessments, harmonized with human studies of relevant disorders.
  • The selection of specific CI measures should align with study objectives and existing literature.