I noticed this looking at my brother's kids and my cousin's girls. My nephews are stuck to the screen, which ended up with them learning more and quite intelligent, but my cousin has a no screen policy for the first years of life, and his girls are emotionally intelligent and quite mature for their age. So, in the short version, screen = more learning and intellectual intelligence - IQ, no screen = more EQ. Later in life, it is the EQ that matters, to achieve a happy, fulfilled life. But IQ means more money long term. Where do you draw the line?