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Updated: Mar 25, 2026

Measuring Delay Discounting in Humans Using an Adjusting Amount Task
Published on: January 9, 2016
Problematic Internet Users' Discounting Behaviors Reflect an Inability to Delay Gratification, Not Risk Taking
Qi Li1, Moqian Tian1,2, Jamie Taxer3
11 Key Laboratory of Behavioral Science, Institute of Psychology , Chinese Academy of Sciences, Beijing, China .
Individuals with problematic Internet use (PIU) show greater impulsivity related to delaying gratification, not risk-taking. This suggests PIU impulsivity is specific to delayed outcomes, challenging general impulsivity trait theories.
Area of Science:
- Behavioral Psychology
- Neuroscience
- Psychiatry
Background:
- Problematic Internet use (PIU) is increasingly recognized, with established links to impulse control disorder (ICD) behaviors.
- Understanding the specific nature of impulsivity in PIU is crucial for targeted interventions.
Purpose of the Study:
- To investigate whether ICDs in individuals with PIU are characterized by an inability to delay gratification or a tendency towards risk-taking.
- To compare delay and probability discounting between PIU individuals and controls.
Main Methods:
- Utilized delay and probability discounting tasks to assess subjective value of rewards.
- Compared discounting behavior between individuals with PIU and a control group under varying monetary gain/loss conditions.
Main Results:
- A significant positive correlation was found between PIU and impulsivity scores.
- PIU individuals exhibited steeper discounting of delayed rewards compared to controls, irrespective of reward sign or amount.
- No significant differences in probability discounting were observed between groups.
Conclusions:
- PIU is associated with heightened impulsivity specifically related to delayed gratification, not risk-taking.
- Findings suggest impulsivity in PIU is context-dependent, challenging the notion of impulsivity as a generalized trait.
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