Mathematics, 02.11.2020 19:50 smithsa10630

A large study of parents and children in Norway found that toddlers who regularly slept less than 10 hours per night or woke frequently (three or more times) at night tended to experience more emotional and behavioral problems when they reached age five. The study involved a large random sample of mothers and children and was conducted over several years. What variables were examined in this study?

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