It’s been a while. I blame the holidays and some Secret Big News.
Facebook’s data science team has an interesting post on the age difference between two people in a relationship. Fun fact: the average age difference in same-sex couples (of either sex) is much larger than that in opposite-sex couples. Why? I can think of two reasons:
(1) the size of the pool of potential mates is smaller for same-sex couples than for opposite-sex couples. Therefore individuals in same-sex couples have to compromise more on other dimensions, like age.
(2) the idea that both partners in a relationship should be of the same age is “conventional”, and people who are in same-sex relationships (an unconventional choice, if strictly for numerical reasons) are likely to make unconventional choices about other aspects of their relationships as well.
One possible way to find evidence for (1): is the difference between same-sex and opposite-sex couples larger in areas where there are less same-sex couples? If so, this is evidence for the “compromise” hypothesis – where there are less same-sex couples there ought to be more compromising along other dimensions. (Similarly, are the members of same-sex couples more different on other dimensions – such as educational status, race, religion, and so on – in areas with less same-sex couples?) It seems more difficult to find a way to test (2).