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Updated: Jun 17, 2026

Measuring Neural Mechanisms Underlying Sleep-Dependent Memory Consolidation During Naps in Early Childhood
Published on: October 2, 2019
Sleep and the transition to adolescence: a longitudinal study
Avi Sadeh1, Ronald E Dahl, Golan Shahar
1The Adler Center for Research in Child Development and Psychopathology, Department of Psychology, Tel Aviv University Tel Aviv, Israel. sadeh@post.tau.ac.il
Insights
Delayed and disrupted sleep patterns in children predict faster pubertal development. These sleep changes appear to precede physical maturation, suggesting a crucial link between sleep and puberty onset.
Area of Science:
- Pediatric endocrinology
- Sleep medicine
- Developmental psychology
Background:
- Pubertal development involves significant physiological and hormonal changes.
- Sleep patterns undergo notable shifts during childhood and adolescence.
- Understanding the interplay between sleep and puberty is crucial for monitoring child development.
Purpose of the Study:
- To investigate the longitudinal relationship between sleep characteristics and pubertal development in school-aged children.
- To determine if sleep patterns predict the rate of pubertal maturation.
Main Methods:
- Longitudinal study with three annual assessments.
- Naturalistic sleep assessment using one week of home actigraphy.
- Pubertal development measured using the Petersen's Pubertal Development Scale (PDS) and Sexual Maturation Scale (SMS).
Main Results:
- Children exhibited expected developmental trends: increased pubertal maturation, delayed sleep onset, and shorter sleep duration.
- Delayed and disrupted sleep at baseline predicted accelerated pubertal changes.
- These associations were consistent in both boys and girls and supported by structural equation modeling.
Conclusions:
- Sleep changes, including delayed and disrupted sleep patterns, appear to precede the physical manifestations of puberty.
- The findings highlight a predictive relationship between sleep and pubertal development.
- Further research is needed to elucidate the underlying biological mechanisms.
Study Objectives:
To assess the links between sleep and pubertal development using a longitudinal design.
Design:
Three consecutive annual assessments of sleep and pubertal development. Sleep was assessed using a week of home actigraphy.
Setting:
Naturalistic sleep in the home setting of school children, Tel Aviv Area, Israel.
Participants:
A sample of 94 (41 boys) typically developing healthy school-age children (age range at first assessment: 9.9-11.2 years).
Intervention:
N/A.
Measurements And Results:
The Petersen's Pubertal Development Scale (PDS) and Sexual Maturation Scale (SMS) were used to assess pubertal development, and a week of actigraphy served to assess naturalistic sleep patterns. The results reflect expected developmental trends: an increase in signs of pubertal maturation, delayed sleep onset, and shorter sleep time. After controlling for age, significant relationships were found between sleep onset time, true sleep time, and number of night wakings at Time 1 and pubertal ratings at Time 2, and pubertal changes from Time 1 to Time 2. Delayed and disrupted sleep at Time 1 predicted faster pubertal changes from Time 1 to Time 2. These results were supported by structural equation modeling. These findings were similar in boys and girls.
Conclusions:
Based on these longitudinal data, it appears that pubertal changes in sleep (delayed sleep phase and disrupted sleep patterns) antedate bodily changes associated with puberty. The underlying mechanisms explaining these predictive links should be further explored.
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