Psychiatric News
The children spent an average of 6.5 hours per week (0.92 hours per day) using tablets when they were 3.5 years old, 6.7 hours per week (0.95 hours per day) when they were 4.5 years old, and 7.0 hours per week (1 hour per day) when they were 5.5 years old. The researchers found that each 69-minute increase in tablet use when the children were 3.5 years old was associated with a 22% increase in expressions of anger and frustration when they were 4.5 years old. In turn, each standard deviation increase in anger and frustration at 4.5 years was associated with an increase of roughly 17 minutes in tablet use at 5.5 years.