Introduction Adolescence to emerging adulthood is a developmental period when
individuals experience substantial biological changes and social transitions. In East Asian
societies, this period is also marked by high pressure around college entrance exams.
However, little is known about how young people's sleep changes over time, or how it is
impacted by social institutions in the cultural context. This study fills this gap in the literature
by examining sleep trajectories from adolescence to emerging adulthood using a population …