Key result
A high-depletion Stroop task increased the selection of immediate rewards to 41.46% compared to 34.11% with a low-depletion task, an effect that was significantly more pronounced in individuals with low trait self-control.
RCT (n=162)
Randomly assigned
No
Absolute Event Rate: 41.46% vs 34.11%
p-value: p=0.011
Individuals with high trait self-control exhibit more stable intertemporal decision-making and higher heart rate variability under varying levels of cognitive depletion.
Low-trait individuals may show greater immediate-reward preference under depletion; leaves open targeted behavioral interventions for adherence.
The present study aimed to explore how state self-control influences the intertemporal decisions made by individuals with high and low trait self-control. State self-control, represented by the degree of depletion, was manipulated by conducting Stroop tasks with different levels of difficulty, and the intertemporal decision task was used as a self-control task. Compared with participants with high trait self-control, the preferences of participants with low trait self-control for immediate rewards were more vulnerable to the difficulty of depletion tasks. Throughout the experimental stages, the heart rate variability (HRV) of participants with high trait self-control was significantly higher than that of participants with low trait self-control, indicating that individuals with high trait self-control may have stronger and more stable self-control abilities.
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Guan et al. (2018) conducted an RCT in High and low trait self-control (n=162). High-depletion Stroop task vs. Low-depletion Stroop task was evaluated on Percentage of selection of immediate rewards (SS%) (p=0.011). A high-depletion Stroop task increased the selection of immediate rewards to 41.46% compared to 34.11% with a low-depletion task, an effect that was significantly more pronounced in individuals with low trait self-control.
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