STUDY OBJECTIVES
This study examined effects on adolescent sleep patterns, sleepiness, and circadian phase of a school transition requiring an earlier start.
DESIGN AND SETTING
Adolescents were evaluated in 9th and 10th grades; school start time in 9th grade was 0825 and in 10th grade was 0720. Assessments at each point included 2 weeks of actigraphy and sleep diaries at home, followed by a 2...
