College students sleep longer but drink more and get lower grades when classes start later

Tuesday, June 14, 2011 - 15:31 in Psychology & Sociology

Later class start times were associated with a delayed sleep schedule, which led to poorer sleep, more daytime sleepiness, and a lower grade-point average. Students with later class start times also consumed more alcohol and reported more binge drinking. Students who were "night owls" with a natural preference to stay up later were more likely than "morning types" to have a delayed sleep schedule and to consume more alcohol. The study involved 253 college students.

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