Maybe there is some other definition of "thinks better" that I don't understand...
Well, there is a passage from the article, which frames it specifically in terms of thinking about social relationships:
“I started thinking about how, even if you are depressed for a few months, the depression might be worth it if it helps you better understand social relationships,” Andrews says
Except (and I'm speaking extremely anecdotally here!) my relationships suffer because I start projecting my feelings onto other people's actions. Have to cancel a get together? It must be because the thought of spending time with me is too burdensome.
Given the black-tinted glasses, relationship understanding is one of the first things out the door.
Well, there is a passage from the article, which frames it specifically in terms of thinking about social relationships:
“I started thinking about how, even if you are depressed for a few months, the depression might be worth it if it helps you better understand social relationships,” Andrews says