Do research assessments make college students more reactive to alcohol events?

This study examines possible synergistic effects of alcohol-related events and postevent assessments on changes in college student readiness to change alcohol use, frequency of alcohol use, and negative consequences. Students were participants in a longitudinal study of drinking behavior. A portion of those reporting negative alcohol events/consequences (e.g., injury, vomiting, memory loss) during the parent study were randomly selected to participate in the present study (n = 492) and randomized to a postevent assessment (n = 296) or a no-assessment control (n = 196). Participants in the postevent assessment group were interviewed soon after their event, and participants in both conditions were interviewed three months after their event. Linear regression models showed higher 3-month readiness to change alcohol use in participants who received a postevent assessment than those who did not. There were reductions in drinking days, heavy drinking days, and further consequences postevent, but no differences by assessment group. However, female participants showed greater reductions in drinking days and heavy drinking days if they were assigned to assessment compared to control. There also was greater postevent reduction in drinking days among assessment group participants with high precollege alcohol severity compared to low precollege alcohol severity. Conversely, participants who reported high aversiveness of their event and were in the control group showed greater reduction in heavy drinking days than those assigned to the assessment group. Findings suggest that college student heavy drinking is reactive to alcohol events, whereas reactivity to postevent assessments may depend on gender, alcohol severity, and event aversiveness. This work highlights the importance of considering possible interactions among extratherapeutic factors in clinical outcome research.