The people who study development in young children admit that we don’t yet know the effect of video screens on the brains of the very young. However, we hear a common warning from these same camps: children under the age of three should not be pacified with video screens. This includes phones, tablets, computers, and TVs. Ok, we know: this is hard. Recommendations for the later years vary, but some say that an hour a day should be the max for kids up to age nine.
If we don’t yet know what effect a video screen has on a young brain, we do know that what young children need is physical human interaction and engagement, balanced with times of quiescence. Quiescence is unstimulated inactivity, and is the soil out of which grows creative and imaginative play. No matter how interactive an app is, there is a serious limit to how creative you can be within the fixed boundaries of a glass screen.
Any repetitive stimulation effects brain wiring. That is, you train a brain to depend on a source of stimulation. Too much exposure to limitless visual excess can wire a child to expect instant gratification (and not just of a visual nature) and become intolerant of any environment where they cannot have what they want when they want it.
(Image from eBay user l8ouise, who will sell you an iPad mount for your baby’s car seat … if you are determined to do your own research on these matters.)