Chunk #2 — Materials and Methods — Procedure

Source

Age of first use and delay to first intoxication in relation to trajectories of heavy drinking and alcohol-related problems during emerging adulthood.

Embedded

yes

Text

Participants completed 8 secure, online surveys: 1 during summer after senior year of high school, 6 biannually (college years 1 to 3), and 1 during fall of senior year of college.