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However, few studies have examined whether changes in demand occur following a brief alcohol intervention (BAI), and whether this change predicts alcohol outcomes over the long term.<\/jats:p><\/jats:sec><jats:sec><jats:title>Methods<\/jats:title><jats:p>Parallel process piecewise latent growth curve models were examined in a sample of 393 heavy drinking emerging adults (60.8% women; 85.2% white; M<jats:sub>age<\/jats:sub>\u00a0=\u00a018.77). In these models, two linear slopes represented rates of change in alcohol use, heavy drinking episodes, alcohol\u2010related problems, and demand (intensity and highest expenditure across all price points or <jats:italic>O<\/jats:italic><jats:sub>max<\/jats:sub>) from baseline to 1 month (slope 1) and 1\u2009month to 16\u2009months (slope 2). Mediation analyses were conducted to estimate the effect of a BAI on 16\u2010month alcohol outcomes through slope 1 demand.<\/jats:p><\/jats:sec><jats:sec><jats:title>Results<\/jats:title><jats:p>A two\u2010session BAI predicted significant reductions in all five outcomes from baseline to 1\u2010month follow\u2010up. Although no further reduction was observed from the 1\u2010month to the 16\u2010month follow\u2010up, there was no regression to baseline levels. Slope 1 demand intensity, but not <jats:italic>O<\/jats:italic><jats:sub>max<\/jats:sub>, significantly mediated the association between BAI and both outcomes\u2014heavy drinking episodes (Est.\u00a0=\u00a0\u22120.23, <jats:italic>SE<\/jats:italic>\u00a0=\u00a00.08, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.01) and alcohol\u2010related problems (Est.\u00a0=\u00a0\u22120.15, <jats:italic>SE<\/jats:italic>\u00a0=\u00a00.07, <jats:italic>p<\/jats:italic>\u2009&lt;\u20090.05)\u2014at the 16\u2010month follow\u2010up.<\/jats:p><\/jats:sec><jats:sec><jats:title>Conclusions<\/jats:title><jats:p>Reducing high valuation of alcohol among heavy drinking emerging adults within the first month following BAI is critical for the long\u2010term efficacy of the intervention. A two\u2010session BAI was associated with enduring reductions in alcohol demand, and the change in demand intensity, but not <jats:italic>O<\/jats:italic><jats:sub>max<\/jats:sub>, was associated with sustained reductions in heavy drinking and alcohol\u2010related problems.<\/jats:p><\/jats:sec>","DOI":"10.1111\/acer.14887","type":"journal-article","created":{"date-parts":[[2022,6,16]],"date-time":"2022-06-16T08:39:56Z","timestamp":1655368796000},"page":"1525-1538","update-policy":"https:\/\/doi.org\/10.1002\/crossmark_policy","source":"Crossref","is-referenced-by-count":10,"title":["Change in alcohol demand following a brief intervention predicts change in alcohol use: A latent growth curve analysis"],"prefix":"10.1111","volume":"46","author":[{"ORCID":"https:\/\/orcid.org\/0000-0001-7458-6508","authenticated-orcid":false,"given":"Kathryn S.","family":"Gex","sequence":"first","affiliation":[{"name":"Department of Psychiatry and Behavioral Sciences, Addiction Sciences Division Medical 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