In this study, the authors analyze the evolutionary history of female and male marital dispersal norms in Sino-Tibetan ethnic groups. They also test for the coevolution of agriculture, domesticated cattle pastoralism, and unilineal descent with these dispersal norms. Results indicate that early Sino-Tibetans were likely patrilocal, agriculture and unilineal descent coevolved with female dispersal norms, and cattle domestication did not coevolve with dispersal norms in Sino-Tibetan ethnic groups.