The effects of a delayed school start time by one hour were examined at a boarding school in Hong Kong. Two cohorts of high school students (N = 228; 61.8% female) were recruited respectively before and after a school start time changed from 7:30am to 8:30am. Both cross-cohort and within-cohort longitudinal comparisons yielded significant increase in total sleep time. Cross-cohort comparison yielded improvement in sleep quality, insomnia, life satisfaction, and psychological distress. Longitudinal data suggested that the longer the additional sleep time, the better was sleep quality, day-time functioning, and subjective wellbeing. Copyright © 2018 The Foundation for Professionals in Services for Adolescents. Published by Elsevier Ltd. All rights reserved.
CitationChan, C. S., Poon, C. Y. S., Leung, J. C. Y., Lau, K. N. T., & Lau, E. Y. Y. (2018). Delayed school start time is associated with better sleep, daytime functioning, and life satisfaction in residential high-school students. Journal of Adolescence, 66, 49-54. doi: 10.1016/j.adolescence.2018.05.002
- School start time
- Subjective wellbeing
- Psychological distress