I thought about this before posting: Evolutionary Psychology. I don't know that there are courses with that title, but look in bio and psych departments for offerings. Primate and Mammal psychology would also be valuable. Understanding things in evolutionary psychology have significantly enhanced my introspective attempts to become more accurate in understanding the world.

(my first thought was physics, 2nd philosophy of ethics where as a 17 year old I learned that there IS no "right" answer, that the best human minds ever are just giving their opinion.)