How Screen and Bedtime affects Kids
From childhood studies, pediatric doctors recommend not to expose child to screen (TV, computer, smartphone and tablet) for a long period. Exposure to screen and flashing light is stimulating brain activity. The result of this long lasting stimulation is a decrease of attention to environment and loss of concentration on activity.
Exposure to screen has a particular negative impact during evening when it is necessary to reduce brain activity of child before he is going to bed. Recommended practices of pediatric doctor is to stop screen exposition before dinner time. From dinner time the period of rest will be long enough to reduce brain activity to a rest value and ease sleeping of the child.
A rule of the thumb can be applied as follows: from birth to 12 months, maximum daily exposure is 1 hour; from 1 to 2 years old, maximum daily exposure is 2 hours; from 2 to 4 years old, maximum daily exposure is 3 hours; after 4 years old, maximum daily exposure shall not be more than 5 hours with any kind of support.