Deficits in executive function are not universal among patients with alcohol use disorder

1. Executive function (EF) deficits are not universal in Alcohol Use Disorder and may be less pronounced in treatment-naïve, higher-functioning, low-comorbidity patients.

2. Routine EF testing may have limited clinical utility for predicting treatment response in this subgroup, and cognitively demanding behavioral therapies remain appropriate first-line options.

Evidence Rating Level: 1 (Excellent)

This study examined whether executive function (EF) impairments—commonly reported in alcohol use disorder (AUD)—are present in a less severe, treatment-naïve population, and whether EF predicted treatment response. Prior research on EF deficits in AUD has relied heavily on recently detoxified inpatients with high psychiatric comorbidity, limiting generalizability to the broader AUD population, particularly those with mild-to-moderate severity and low comorbidity. Investigators recruited 147 adults with moderate AUD and a treatment goal of controlled drinking from a randomized trial comparing Behavioral Self-Control Training versus Motivational Enhancement Therapy. Participants completed eight CANTAB® neuropsychological tests at baseline, assessing response inhibition, working memory, cognitive flexibility, and delay discounting, and were compared to 72 non-clinical controls; regression models then tested whether baseline EF (Stop Signal Task, Information Sampling Task) predicted drinking outcomes at 12 and 26 weeks. Patients with AUD performed comparably to controls on nearly all EF measures, with only attention-switching congruency cost showing poorer performance in the AUD group, and neither response inhibition nor delay discounting predicted reductions in alcohol consumption or drinking days at follow-up. EF deficits are not universal in AUD and may be less pronounced in treatment-naïve, higher-functioning, low-comorbidity patients. Routine EF testing may have limited clinical utility for predicting treatment response in this subgroup, and cognitively demanding behavioral therapies remain appropriate first-line options.

Click here to read this study in PLOS One

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