I appreciate this Yale Open Course segment on personality, IQ, and the Nurture Assumption.
I can't say that I learned a whole lot. The Meyer Briggs personality test is robust and predictive. The many "kinds" of intelligence is correlated which is what psychologists call G (general intelligence). And personality and IQ come from about half genes and half non-shared environment.
The course did teach me some better ways to think about these issues, and some additional reasons why they're so robust. And I did not know how terrible ink blotch tests were, or how often they're still used!
I also like to hear these things verified from a Yale classroom, and in no uncertain terms. When I try to talk about these things with the normals I can sometimes feel like some fringe weirdo who just makes stuff up, and it feels like I'm getting an inappropriately high level of push-back from people. And not very quality push-back either, mostly just setting the burden of proof to an absurdly high level.