Sleep & IQ: Are Kids Smarter if They Sleep Longer?

A new study from Canada examined the relationship between sleep duration and intelligence in children.The study involved 39 healthy children. They were between 7 and 11 years old. Their sleep was measured at home by actigraphy for four nights. This identified their habitual sleep duration on weeknights.Intelligence was measured using the Wechsler Intelligence Scale for Children — Fourth Edition.