The Difference Between Americans and Humans? - NYTimes.com
August 30, 2010 by By FREAKONOMICSDespite better diets, longer lifestyles and the Flynn effect, the effect size between IQs from people from the 1st world versus 3rd world vary more due to cultural differences in the presentation of the IQ tests rather than innate differences. ... the results show quite strongly that people reject low offers (though the definition of “low” varies a little, but not by a lot), and people are willing to reject large sums of money in countries like Indonesia and Slovenia , ...