Authors of a new study link child tablet use at 3 ¹/₂ to more expressions of anger and frustration a year later. The child's tantrums at 4 ¹/₂ were associated with more tablet use by 5¹/₂.

The new study, published in the journal JAMA Pediatrics, shows that child tablet use at 3.5 years old was associated with a higher number of expressions of anger and frustration a year later.

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The researchers linked child tablet use at 3 ¹/₂ to more expressions of anger and frustration a year later. The child’s tantrums at 4 ¹/₂ were associated with more tablet use by 5¹/₂.