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Related Experiment Video

Updated: Nov 30, 2025

Measuring Delay Discounting in Humans Using an Adjusting Amount Task

Measuring Delay Discounting in Humans Using an Adjusting Amount Task

Published on: January 9, 2016

No differences in delay discounting between smokers with and without HIV.

Cory Czuczman¹, Morgan Thompson¹, E Paul Wileyto^2,3

¹Department of Psychiatry, University of Pennsylvania, 3535 Market Street, Suite, Philadelphia, PA, 4100, USA.

Psychopharmacology

|November 12, 2020

Summary

Delay discounting, a measure of reward valuation, did not differ between smokers with and without HIV. Smoking abstinence did not disproportionately affect delay discounting in people with HIV, suggesting it does not explain lower quit rates.

Keywords:

Abstinence Decision-making Delay discounting HIV Smoking Tobacco cessation

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Published on: January 7, 2019

Area of Science:

Behavioral economics
Addiction research
Public health

Background:

People with HIV (PWH) exhibit higher smoking rates and lower cessation success than the general population.
Understanding factors contributing to this disparity is crucial for public health interventions.
Delay discounting, the reduced value of delayed rewards, is a potential explanatory factor.

Purpose of the Study:

To compare delay discounting between adult smokers with and without HIV.
To assess if acute smoking abstinence differentially impacts delay discounting in smokers with HIV.

Main Methods:

A sub-study involving smokers with HIV (n=34) and without HIV (n=46).
Two laboratory sessions: one under usual smoking conditions, one after 24-hour abstinence.
Delay discounting assessed at baseline and after 8 weeks of smoking cessation treatment.

Main Results:

No significant differences in delay discounting rates were found between HIV status groups.
Acute smoking abstinence did not significantly alter delay discounting within either group.
Smokers without HIV showed increased delay discounting after cessation treatment, unlike smokers with HIV.

Conclusions:

Delay discounting does not appear to explain lower smoking cessation success rates in people with HIV.
Further research should explore other factors contributing to smoking disparities in PWH.
Findings suggest alternative targets for smoking cessation interventions in this population.