{"title":"Decision-Making Signatures of Methamphetamine and Alcohol Use Disorders.","authors":"Xinyu Cheng, Jing Shen, Junhui Li, Wei Yuan, Duanwei Wang, Hairong Wang, Ru-Yuan Zhang, Yu-Feng Xia, Xinyu Cao, Wannian Sha, Shuhua He, Yi Liu, Junjie Tang, Yi Zhang, Yuqi Cheng, Ti-Fei Yuan, Di Zhao","doi":"10.1016/j.bpsc.2025.08.008","DOIUrl":null,"url":null,"abstract":"<p><strong>Background: </strong>Aberrant decision-making is a hallmark of substance use disorders (SUDs), often impeding recovery. While uncertainty, comprising risk and ambiguity, is central to real-world choices, its distinct effects in SUDs remain underexplored. This study disentangles risk and ambiguity to identify context-specific impairments in methamphetamine (MUD) and alcohol use disorders (AUD).</p><p><strong>Methods: </strong>We used a Choice under Risk and Ambiguity (CRA) task to examine uncertainty decision-making (UDM) in 101 individuals with MUD, 56 with AUD, and their respective healthy control groups (HCs; n = 45 and n = 75). Group-level analyses applied a modified psychometric function to estimate decision parameters, while individual-level UDM indicators were derived using custom computational methods and subjective value models.</p><p><strong>Results: </strong>Individuals with MUD exhibited heightened reward sensitivity and a stronger preference for large rewards under high uncertainty, with flexible shifts across ambiguity levels. Besides, reward sensitivity under high ambiguity was linked to symptom severity. In contrast, individuals with AUD showed no evident decision-making impairments across conditions and, like HCs, adopted conservative strategies under ambiguity. Direct comparisons confirmed more pronounced UDM impairments in MUD than in AUD.</p><p><strong>Conclusion: </strong>These findings underscore the heterogeneity of decision-making patterns across SUDs, validating the need for precision in therapeutic strategies.</p>","PeriodicalId":93900,"journal":{"name":"Biological psychiatry. Cognitive neuroscience and neuroimaging","volume":" ","pages":""},"PeriodicalIF":4.8000,"publicationDate":"2025-09-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"0","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Biological psychiatry. Cognitive neuroscience and neuroimaging","FirstCategoryId":"1085","ListUrlMain":"https://doi.org/10.1016/j.bpsc.2025.08.008","RegionNum":0,"RegionCategory":null,"ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"","JCRName":"","Score":null,"Total":0}
引用次数: 0
Abstract
Background: Aberrant decision-making is a hallmark of substance use disorders (SUDs), often impeding recovery. While uncertainty, comprising risk and ambiguity, is central to real-world choices, its distinct effects in SUDs remain underexplored. This study disentangles risk and ambiguity to identify context-specific impairments in methamphetamine (MUD) and alcohol use disorders (AUD).
Methods: We used a Choice under Risk and Ambiguity (CRA) task to examine uncertainty decision-making (UDM) in 101 individuals with MUD, 56 with AUD, and their respective healthy control groups (HCs; n = 45 and n = 75). Group-level analyses applied a modified psychometric function to estimate decision parameters, while individual-level UDM indicators were derived using custom computational methods and subjective value models.
Results: Individuals with MUD exhibited heightened reward sensitivity and a stronger preference for large rewards under high uncertainty, with flexible shifts across ambiguity levels. Besides, reward sensitivity under high ambiguity was linked to symptom severity. In contrast, individuals with AUD showed no evident decision-making impairments across conditions and, like HCs, adopted conservative strategies under ambiguity. Direct comparisons confirmed more pronounced UDM impairments in MUD than in AUD.
Conclusion: These findings underscore the heterogeneity of decision-making patterns across SUDs, validating the need for precision in therapeutic strategies.