Related Experiment Video
Updated: Feb 10, 2026

Bridging the Technology Divide in the COVID-19 Era: Using Virtual Outreach to Expose Middle and High School Students to Imaging Technology
Published on: September 28, 2022
Delayed school start time is associated with better sleep, daytime functioning, and life satisfaction in residential
Christian S Chan1, Cyanea Y S Poon1, Jacklyn C Y Leung1
1The University of Hong Kong, Hong Kong.
Abstract:
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.
More Related Videos
08:08Eye Tracking, Cortisol, and a Sleep vs. Wake Consolidation Delay: Combining Methods to Uncover an Interactive Effect of Sleep and Cortisol on Memory
Published on: June 18, 2014
14:15Measurement Of Neuromagnetic Brain Function In Pre-school Children With Custom Sized MEG
Published on: February 19, 2010
Related Concept Videos
Functions of Life
Metabolism
The basic function of an organism is to consume energy and molecules in foods, convert some of it into fuel for movement, sustain body functions, and build and maintain body structures. There are two types of reactions that accomplish this: anabolism and catabolism.
Anabolism is the process whereby...
Half-life of a Reaction
Design Example: Designing a Residential Plumbing System
Characteristics of Life
Insufficient Sleep and Sleep Deprivation
Sleep deprivation is a more severe form of sleep loss...
The Angiosperm Life Cycle