Electronic Thesis and Dissertation Repository

Thesis Format

Integrated Article

Degree

Master of Science

Program

Psychology

Supervisor

Reid, Graham J.

Abstract

This thesis explored longitudinal changes in nap behaviours among preschool-aged children, addressing inter- and intra-child variability. Using data from a large, nationally representative sample of Canadian children aged 1-6 years, Study One employed a generalized linear model to examine nap patterns over a 6-month period, revealing significant declines in daytime sleep proportion and duration, particularly among regular nappers. Additionally, 4% of children who were not napping at baseline resumed napping at follow-up. Study Two utilized binary logistic regressions to identify socio-ecological predictors influencing nap cessation, highlighting that longer nap duration and nighttime sleep issues correlate with lower odds of nap cessation. These findings provide insights into developmental changes in daytime sleep behaviours and factors influencing nap patterns among young children.

Summary for Lay Audience

As children grow older, their napping habits undergo significant changes, particularly as they transition from daytime naps to sleeping exclusively at night. This shift reflects their evolving sleep patterns as they mature. Despite this, there has been limited research into the evolution of nap behaviours and the factors influencing children's cessation of napping. This thesis addresses these gaps through two studies. In the first study, we tracked changes in nap behaviours over a six-month period. We observed a gradual decrease in the proportion of daytime sleep relative to nighttime sleep, as well as a shortening of nap durations, especially among children who initially napped regularly. Interestingly, some children who had discontinued napping at the study's outset resumed napping six months later. In the second study, we investigated factors influencing children's decision to stop napping. We found that longer nap durations and nighttime sleep issues were associated with a lower likelihood of napping cessation. Overall, this research enhances our understanding of the development of napping behaviours and the factors influencing changes in children's nap habits.

Available for download on Friday, August 07, 2026

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