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Related Experiment Video

Updated: Jun 8, 2025

Comparing the Effects of Electronic Cigarette Vapor and Cigarette Smoke in a Novel In Vivo Exposure System
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Delay discounting validity and e-cigarette use: A comparison in e-cigarette users, combustible cigarette users, dual

Ji Young Kim1, Derek D Reed2, Justin C Strickland3

  • 1Department of Psychology, Penn State Harrisburg.

Experimental and Clinical Psychopharmacology
|November 7, 2024
PubMed
Summary

Electronic cigarette (EC) and dual users show steeper delay discounting, preferring immediate rewards over larger delayed ones, compared to nonusers. This suggests a behavioral mechanism linking EC use to devaluation of future outcomes.

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Measuring Delay Discounting in Humans Using an Adjusting Amount Task
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Area of Science:

  • Behavioral Economics
  • Addiction Science
  • Psychology

Background:

  • Delay discounting, the devaluation of outcomes with increased temporal delay, is linked to maladaptive behaviors like tobacco use.
  • Previous research focused on delay discounting in combustible cigarette (CC) users, but the rise of electronic cigarettes (e-cigarettes [EC]) necessitates further investigation.
  • Understanding delay discounting in EC users is crucial given the evolving landscape of nicotine product consumption.

Purpose of the Study:

  • To establish convergent validity across four distinct delay discounting tasks.
  • To compare delay discounting behavior among four user groups: dual users, exclusive EC users, exclusive CC users, and nonusers.

Main Methods:

  • A web-based study assessed delay discounting in 259 participants using four tasks: Monetary Choice Questionnaire, 5-Trial Adjusting Delay Discounting Task (ADT-5), Temporal Discounting Questionnaire, and Brief Intertemporal Choice Task (BRIC Task).
  • Convergent validity of the four tasks was evaluated.
  • Delay discounting outcomes were compared across exclusive EC users, exclusive CC users, dual users, and nonusers.

Main Results:

  • The four delay discounting tasks demonstrated moderate to strong convergent validity (p < .001).
  • Significant differences in delay discounting were observed across all four user subgroups (p < .048), with small effect sizes.
  • Exclusive EC users and dual users exhibited significantly steeper discounting than nonusers on the ADT-5 and BRIC Task.

Conclusions:

  • Delay discounting tasks exhibit good convergent validity for assessing intertemporal choice behavior.
  • Steeper delay discounting is associated with exclusive e-cigarette use and dual use, suggesting a potential behavioral mechanism for these consumption patterns.
  • Findings highlight the role of delay discounting in understanding the behavioral underpinnings of electronic cigarette use.