Boys’ Sleep Habits Steady Before Teenage Years: New Research

A recent study conducted by Flinders University has shed light on the sleep patterns of pre-adolescent boys. The research indicates that the time it takes for boys to fall asleep remains consistent between the ages of 10 and 12. These findings have important implications for families, clinicians, and researchers, as they suggest that sleep issues in children under the age of 12 may be influenced more by social and behavioral factors rather than biological ones.

Boys' Sleep Habits Steady Before Teenage Years: New Research 1

The Shift in Sleepiness

Prior research has shown that as children transition into adolescence, they become more tolerant of sleepiness in the evening. This increased tolerance can lead to longer sleep onset times, resulting in teenagers waking up feeling less refreshed for school and weekend activities.

Dr. Chelsea Reynolds, a Clinical Psychologist at Flinders University, led a study aimed at pinpointing when this shift in sleepiness levels occurs in pre-adolescent boys. The goal was to provide insights that could inform future interventions designed to prevent sleep problems in adolescence.

Measuring Sleepiness

To gauge sleepiness levels in pre-adolescent boys, experts invited twenty 10-year-old boys to participate in a sleep camp every six months over an 18-month period. During their stay, the boys engaged in various daytime activities, and their sleep patterns were closely monitored throughout the night through a series of tests.

During these tests, the boys were awakened if they exhibited signs of falling asleep. These assessments were conducted nine times throughout the night, from 7:30 pm to 3:30 am, allowing sleep experts to measure the time it took for them to become sufficiently sleepy again.

Stable Sleep Patterns

Dr. Chelsea Reynolds highlighted the study’s intriguing findings.

As expected, we observed that the 10-year-old boys took a while to fall asleep early in the night but fell asleep rapidly as the night progressed and fatigue set in.

However, what was particularly noteworthy was that over the 18-month study period, the boys consistently took about the same amount of time to fall asleep during each sleep test. This indicates that their sleep patterns remained stable throughout this timeframe. In essence, boys up to the age of 12 are unlikely to experience significant changes in their evening sleepiness levels.”

Looking Ahead

Dr. Reynolds noted that more research is needed to understand what occurs after the age of 12. “We anticipate that sometime before the age of 15, there will be a shift towards reduced sleepiness in the evening, with longer sleep onset times. This is the stage when parents may begin seeking assistance for teenagers who struggle to wake up on time for school.”

Dr. Reynolds explained that it’s common for teenagers to seek help from sleep psychologists due to delayed sleep patterns and extreme morning sleepiness.


In conclusion, this research provides valuable insights into the stability of pre-adolescent boys’ sleep patterns. It suggests that sleep problems in children under the age of 12 may be less influenced by biological factors and more by social and behavioral factors. As children enter adolescence, changes in sleep patterns are expected, which may warrant different approaches to address sleep-related issues. For parents and clinicians, understanding these age-specific sleep patterns can help tailor strategies to promote healthy sleep habits in children and teenagers alike.

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