or “very, very high” on alcohol?” Response options for questions (iii) to (v) ranged from 1 “Every day or almost every day” to 7 “Never” and were recoded to assign higher scores to more frequent alcohol use. Items were standardized before they were combined to provide an overall index of alcohol use which had good internal consistency in the present sample (Time 1, α = .85; Time 2, α = .93).
