ad sleep habits could lead to bad behavior in young children.
A new study shows children who don't have regular bedtimes during the school week are more likely to have behavioral problems by the age of seven.
Researchers collected data on more than 10,000 kids at three, five, and seven years old. They received information on the kids' bedtimes and behavior by their moms and teachers.
As children progressed through early childhood without a regular bedtime, their behavior scores got worse. Study Author Yvonne Kelly says, "those behavioral problems include hyperactivity, emotional problems, conduct problems, and problems with their peers."
However, Kelly says,children who switched to a more regular bedtime had clear improvements in their behavior. Researchers believe irregular bedtimes upset the body's natural rhythm and that sleep deprivation harmed developing brains.