When you show a correlation between two things, you can’t say which way the relationship goes. Do people carrying umbrellas on a city street cause it to rain? Or does the rain cause people to carry their umbrellas?
We know the answer to this question, only because we know the relationship between rain and umbrellas — the rain came first, and then someone invented the umbrella.
So it is surprising to read that an NPR news story recently noted, “More Time Online Raise Risk For Teen Depression.” The only problem with that headline?
It’s not true.