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Recent trends in the timing of first sex and marriage among young women in Ethiopia
Ethiopia reproductive behavior intercourse
2015/7/27
Ethiopia has been characterized by high population growth. Recent social and economic developments have the potential to alter reproductive patterns in the country. Some of these developments in...
![](http://www.firstlight.cn/upload/imgfile/201412/1/2014121161649919.jpg)
Choosing between two good things can be tough. When animals must decide between feeding and mating, it can get even trickier. In a discovery that might ring true even for some humans, researchers have...
Assortative matching among same-sex and different-sex couples in the United States, 1990-2000
assortative mating interracial unions same-sex couples
2009/12/8
Same-sex couples are less likely to be homogamous than different-sex couples on a variety of characteristics, including race/ethnicity, age, and education. This study confirms results from previous st...