In a new study, children were shown to spend an average of 3.6 hours a day using screens for entertainment. Children who spent less than two hours on screens scored, on average, about 4 percent higher on a battery of thinking-related tests.

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In a new study, children were shown to spend an average of 3.6 hours a day using screens for entertainment. Children who spent less than two hours on screens scored, on average, about 4 percent higher on a battery of thinking-related tests.