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.
Glaucoma is a progressive condition caused by a combination of genetic and environmental factors and is the leading cause of irreversible bl...
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'...
The National Couples Survey asked married people if they've had anal intercourse in the past four weeks. Here are their responses by ra...