Does child gender affect marital status? Evidence from Australia

Pooling microdata from five Australian censuses, I explore the relationship between child gender and parents' marital status. By contrast with the USA, I find no evidence that the gender of the first child has a significant impact on the decision to marry or divorce. However, among two-child families, parents with two children of the same sex are 1.7 percentage points less likely to be married than parents with a boy and a girl. This finding is unlikely to be consistent with theories of preference for sons over daughters, differential costs, role models, or complementary costs but is consistent with a theory of mixed-gender preference.