Can independence make you smarter?

One thing I noticed about university was, that the fewer friends I had, the higher my grades were.

If I took a class and only had one friend, I would get an A+. If I took a class and only had 2 friends, I would get an A. If I took a class and had 3 friends, I would get an A-.

It’s also been shown statistically, that shy people tend to get higher grades than outgoing people.

Can independence make you smarter?
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