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Jim Liebelt Christian Blog and Commentary

Teen Night Owls Struggle to Learn and Control Emotions at School

*The following is excerpted from an online article posted on NPR.

According to new research, students who regularly go to bed late tend to be both sleepier during the day and have more trouble with self-regulation, regardless of how much sleep they reported getting.

Researchers wanted to know more about the associations between the amount of sleep students get, how sleepy they are in the daytime and a brain function known as self-regulation — the ability to control emotions, cognitive functions and behavior. For the study, they surveyed 2,017 students in 19 schools in Fairfax County, Va., about a variety of factors related to sleep. They were in seventh to 12th grades.

The study, led by Dr. Judith Owens and colleagues, appears in the journal Pediatrics. Owens is director of sleep medicine at Boston's Children's Hospital.

Answers to one set of questions in the online survey allowed researchers to determine a student's so-called chronotype, a measure of when a person's biological clock makes them naturally inclined to sleep. It uses a scale that ranks someone's "morningness" or "eveningness."

"It's a preference toward either being a relative morning lark — in other words: You like to go to bed earlier and get up earlier," Owen says. "Or, you're more on the night owl spectrum: Your biological preference is to go to bed later and get up later."

Night owls tend to have the hardest time with self-regulation, the researchers found. These students have more memory problems, are more impulsive, and get irritated and frustrated more easily.

"The take-home message here is that it's not just how much you sleep, it's when you sleep," she says. Because teens tend to be night owls, Owens thinks schools should start classes later.

"Getting these kids enough sleep and appropriately timed sleep is necessary for optimal self-regulation," she says. "If you don't have enough and appropriately timed sleep, then you're going to compromise your ability to have these kinds of skills."

Source: NPR