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    Does changing social influence engender changes in alcohol intake? A meta-analysis

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    Publication date
    2016-10
    Author
    Prestwich, A.
    Kellar, Ian
    Conner, M.
    Lawton, R.
    Gardner, Peter H.
    Turgut, L.
    Keyword
    Review
    Meta-analysis
    Alcohol
    Social influence
    Norms
    Rights
    ©American Psychological Association, 2016. This paper is not the copy of record and may not exactly replicate the authoritative document published in the APA journal. Please do not copy or cite without author's permission. The final article is available, upon publication, at: http://dx.doi.org/10.1037/ccp0000112.
    Peer-Reviewed
    Yes
    
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    Abstract
    Objective: Past research has suggested that social influences on drinking can be manipulated with subsequent reductions in alcohol intake. However, the experimental evidence for this and the best strategies to positively change these social influences have not been meta-analyzed. This research addressed these gaps. Method: Randomized controlled trials testing social influence-based interventions on adults’ drinking were systematically reviewed and meta-analyzed. The behavior change techniques used in each study were coded and the effect sizes showing the impact of each intervention on (a) social influence and (b) alcohol intake were calculated. Meta-regressions identified the association between these effect sizes, as well as the effect of specific behavior change techniques on social influences. Results: Forty-one studies comprising 17445 participants were included. Changes in social influences were significantly associated with changes in alcohol intake. However, even moderate-to-large changes in social influences corresponded with only a small change in drinking behavior and changing social influences did not reduce alcohol-related problems. Providing normative information about others’ behavior and experiences was the most effective technique to change social influences. Conclusions: Social influences and normative beliefs can be changed in drinkers, particularly by providing normative information about how much others’ drink. However, even generating large changes in these constructs are likely to engender only small changes in alcohol intake.
    URI
    http://hdl.handle.net/10454/17668
    Version
    Accepted manuscript
    Citation
    Prestwich A, Kellar I, Conner M et al (2016) Does changing social influence engender changes in alcohol intake? a meta-analysis. Journal of Consulting and Clinical Psychology. 84(10): 845-860.
    Link to publisher’s version
    http://dx.doi.org/10.1037/ccp0000112
    Type
    Article
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    Life Sciences Publications

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