Procedures

The university’s Institutional Review Board approved all procedures. Full-time students aged 18–20, who were in their first or second year, were approached at the beginning of the academic year via e-mail to participate. Participants completed each 50-min assessment online (assessments were hosted on the Project Implicit platform via a private study url). Each assessment included informed consent, three Implicit Association Tests (IATs; Greenwald et al., 1998) to measure alcohol associations and self-report measures. There were eight assessments, occurring at 3-month intervals. Compensation was $25 for the first three assessments, $30 for the last five assessments, and bonuses of $5 upon completion of all of the first four assessments and $10 for all of the final four. A $5 incentive was added to the last assessment for those ineligible for the $10 bonus. See Lindgren et al. (2016a) for the full description of study procedures and additional detail about study participants.