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Updated: Jun 29, 2025

The Motivation for Alcohol Reward: Predictors of Progressive-Ratio Intravenous Alcohol Self-Administration in Humans
Published on: April 28, 2022
Young adults' change talk within brief motivational intervention in the emergency department and booster sessions is
Stéphanie Blanc1, Joseph Studer1, Molly Magill2
1Department of Psychiatry, Lausanne University Hospital.
Change talk (CT) in brief motivational interventions significantly predicts reduced heavy drinking days (HDD) in young adults. Early increases in CT, particularly after the first week, are linked to sustained reductions in HDD over 12 months.
Area of Science:
- Addiction research
- Psychology
- Public health
Background:
- Brief motivational interventions (BMIs) are used to address alcohol use in young adults.
- Change talk (CT) is a key component of BMIs, reflecting a client's desire for change.
- Understanding CT's role as a mechanism of change is crucial for optimizing interventions.
Purpose of the Study:
- To investigate the effect of change talk (CT) within successive brief motivational interventions (BMIs) as a mechanism of change for alcohol use.
- To examine how baseline CT and changes in CT over time predict heavy drinking days (HDD).
Main Methods:
- Secondary analysis of a randomized controlled trial involving 344 young adults with alcohol intoxication.
- Included 140 participants with audio-recorded baseline BMIs and up to three phone booster sessions.
- Used latent growth curve modeling to analyze CT (Percent CT, CT Average Strength) and HDD over 12 months.
Main Results:
- CT increased from baseline to the 1-week booster session and remained stable thereafter.
- Higher baseline CT was associated with fewer HDD at 1 month.
- An increase in CT from baseline to 1 week predicted decreased HDD from 1 to 12 months.
Conclusions:
- Both initial levels of CT and its trajectory within the first week are significant predictors of reduced heavy drinking days.
- The findings highlight the importance of fostering CT early in the intervention process.
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