https://techcrunch.com/2019/01/14/turns-out-the-science-saying-screen-time-is-bad-isnt-science/

A new study is making waves in the worlds of tech and psychology by questioning the basis of thousands of paper and analyses with conflicting conclusions on the effect of screen time on well-being. The researchers claim is that the science doesn’t agree because it’s bad science. So is screen time good or bad? It’s not that simple.

The conclusions only make the mildest of claims about screen time, essentially that as defined it has about as much effect on well-being as potato consumption. Instinctively we may feel that not to be true; technology surely has a greater effect than that — but if it does, we haven’t found a way to judge it accurately.