Relevance of Probabilistic Reversal Learning for Adolescent Drinking Trajectories

Area of Science:

• Neuroscience
• Developmental Psychology
• Cognitive Science

Background:

• Adolescence involves developing adaptivity to changing environments.
• Probabilistic reversal learning (PReL) measures this adaptivity.
• Previous research links heavy alcohol use to impaired PReL.

Purpose of the Study:

• Investigate adaptivity in adolescents using PReL.
• Examine the neurocognitive processes of reversal learning development.
• Test the hypothesis that PReL is negatively associated with alcohol use and that alcohol impairs PReL.

Main Methods:

• Longitudinal study of 143 adolescents (ages 14, 16, 18).
• Utilized probabilistic reversal learning (PReL) tasks.
• Applied computational modeling and functional magnetic resonance imaging (fMRI).

Main Results:

• Adolescent PReL performance improved with age, showing reduced switching behavior.
• Computational models indicated higher learning rates and altered reward/loss sensitivity in older adolescents.
• Higher alcohol consumption correlated with reduced medial frontal activity during reward prediction errors.

Conclusions:

• Reversal learning adaptivity improves during adolescence.
• Risky drinking, not low-level consumption, is associated with neurocognitive alterations in PReL.
• Findings suggest PReL's relevance to maintaining or escalating risky drinking behaviors.