The Midlife Development in the United States Study asked Americans how important it is for members of their ethnic group to marry inside the group. Here are the percentages who said "very important" or "somewhat important" (N = 4,881):
Non-whites and especially Jewish Americans have high numbers.
There are positive correlations between IQ and both longevity and height. Many genes underlie these traits -- it looks like there are healt...
In the comments in the last post , some readers contended that Jews are not ethnocentric. Using the same question I used in the comments se...
Via a reader at iSteve, it looks like this might be the vocabulary test used by the General Social Survey. (Someone please tell me if I'...
Which factor reduces family size the most? Below are the standardized OLS regression coefficients for a sample of whites ages 40-59: Stand...