Other Time 1 questionnaires relevant to the LR-based model included perceived drinking among peers (PEER) from the Important People and Activities Scale [42] regarding whether each of up to 12 close peers drinks, as well as their drinking frequencies and quantities (retest reliabilities >0.80, and good validity compared to other measures). Alcohol expectancies (EXPECT) were generated from age-appropriate Alcohol Expectancy Questionnaires (AEQ) (Cronbach α >0.7, retest reliabilities ~0.7, and good validities compared with comparable scales) [13, 43-45]. Using alcohol to cope with general life stress (COPE) was measured with the Drinking to Cope Scale (Cronbach α =0.85, and good validities and reliabilities) [46, 47].
