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Alcohol-Induced Blackouts and Subsequent Drinking Trajectories: Evidence From Three Longitudinal Samples
Angelo M DiBello1, Mary Beth Miller2, Kate B Carey3
1Center for Alcohol and Substance Use Studies & Department of Graduate and Applied Professional Psychology, Rutgers University, Piscataway, New Jersey, USA.
Alcohol, Clinical & Experimental Research
|July 21, 2026
Summary
Experiencing alcohol-induced blackouts may signal high-risk drinking but can also lead to reduced alcohol-related harm over time. However, blackouts also predict future blackout occurrences, highlighting a complex relationship.
Area of Science:
- Neuroscience
- Psychology
- Public Health
Background:
- Alcohol-induced blackouts are indicators of acute intoxication and increased risk for alcohol-related harm.
- Blackout experiences can be psychologically significant, potentially influencing future drinking patterns.
Purpose of the Study:
- To investigate if recent blackouts predict changes in alcohol consumption, related consequences, and future blackouts among college students.
- To analyze the longitudinal impact of blackout experiences on drinking behavior and harm.
Main Methods:
- Utilized data from three independent longitudinal samples of college student drinkers.
- Employed generalized linear mixed models to assess the predictive relationship between baseline blackout status and 12-month follow-up outcomes.
- Controlled for baseline drinking, consequences, demographics, and time in the analysis.
Main Results:
- Baseline blackout did not predict increased subsequent alcohol use across samples.
- Blackouts predicted reduced alcohol-related consequences in two of three samples (21%-40% reduction).
- Experiencing blackouts predicted a higher likelihood of subsequent blackouts across all samples.
Conclusions:
- Alcohol-induced blackouts may serve as a turning point for reducing alcohol-related harm, despite being a marker of high-risk drinking.
- The impact of blackouts on drinking behavior and harm is not uniform across all individuals or samples.
- Assessing blackouts is crucial in research and clinical settings due to their dual role as a risk indicator and a potential catalyst for behavioral change.
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