Trevor Murphy Posted almost 2 years ago Can we "engineer" our own interests through repeated exposure? 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.