Are states led by women less prone to conflict than states led by men? We answer this question by examining the effect of female rule on war among European polities over the 15th-20th centuries. We utilize gender of the first born and presence of a female sibling among previous monarchs as...

We use a unique dataset to analyze the marriage patterns of the British and German nobility from the 1500s to the 1800s, and discuss the differences in institutions between the two countries. Historical evidence shows that: nobles tended to marry nobles with identical title; and, German marriages...

In many western European nations there have been dramatic recent rises in unmarried cohabitation and having children outside marriage. Here we examine the extent and depth of these changes across nations. Our analysis includes an examination of type of first partnership, duration of cohabiting...