Mar 29 2012: The study you linked to isn't one of Pinker's studies, it's a study from a dissertation he supervised about the genetics of language. The studies he referred to in this video, http://www.ted.com/talks/lang/en/steven_pinker_chalks_it_up_to_the_blank_slate.html, show much more similarities between genetically identical twins. As for the math situation, those who do better on math usually get better grades. One or two classes with a hard teacher aren't going to change someone's predisposition, probably. I'm not saying that genetics is the only determinant of career path, I'm saying that it's probably the main one.
Mar 29 2012: Steven Pinker's research points towards the conclusion that our career decisions are largely based on genetic influences. The twin studies show pretty significant similarities between twins who were raised in different environments.
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A reply on Conversation: Can we "engineer" our own interests through repeated exposure?
A comment on Talk: Taylor Wilson: Yup, I built a nuclear fusion reactor
lol.
A comment on Conversation: Can we "engineer" our own interests through repeated exposure?