The purpose of the present study was to examine associations between use of protective behavioral strategies (PBS) and alcohol-related outcomes (alcohol consumption, negative alcohol consequences, and positive alcohol consequences) using a daily diary approach. This approach is less affected by retrospective memory biases than typical self-reports of alcohol-related variables and allows the examination of both between-subjects and within-person effects.
Using hierarchical linear modeling of data from 40 subjects who completed daily dairies for up to 15 days, we found significant within-person variation in PBS use over time, and each type of PBS had unique relationships with alcohol-related outcomes. For example, within-person variation in Serious Harm Reduction, one form of PBS, predicted increased daily alcohol use, negative consequences, and positive consequences.
Our findings suggest the importance of intensive longitudinal methods to examine both between-subjects and within-subjects effects of PBS use and alcohol-related outcomes.
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