First off, I never said that psychology was a humanity, you are conflating the two (and in fact, I was comparing the social sciences to the humanities, I'm not sure how you missed that?). This was a class, in the social sciences, for the social science sequence credit, /taught/ by psychologists and focusing on the mind. I think you'll find there are whole schools of psychology that are in the social sciences (the aptly named social psychology, for one).