Racial gaps in cognitive ability in South Africa. Not sure why the White mean is so low. 370ish should correspond to roughly IQ 90 (assuming sd = 100, int mean as given). https://books.google.com/books?id=zULv_L1x_tMC&pg=PA101&lpg=PA101&dq=%22achievement+test%22+vietnam&source=bl&ots=07IjxWcjlk&sig=5A3WNcSTLNAgHqnwB9ZMitxRBcc&hl=en&sa=X&ved=0ahUKEwi179D-i_zYAhUMylMKHeCfBxkQ6AEIPDAF#v=onepage&q=%22achievement%20test%22%20vietnam&f=false …pic.twitter.com/0lqRPzFUiu
