What does the science says about giving kid a tablet at the age of 4? Mainly to play cognitive games and creatively express herself with drawings etc.

I'm thinking about buying my 4 year old a tablet to play some cognitive games and creatively express himself. He'd probably be allowed to use it cca 30 min per day.What does the science says about that? via /r/Parenting https://ift.tt/2Yoec8X