Using large-scale longitudinal data, we unpack what actually changes when people enter (or leave) romantic relationships.

Children who share only one parent are half siblings. Children who have been bisected via a tragic logging accident are also half siblings, but in a different way. A great-aunt is someone with whom ...

You might have heard the term "relationship escalator" before — often used to describe the traditional progression of a romance from first date to monogamous relationship to moving in together to ...