Extensive empirical and genetic evidence demonstrates that humans tend to choose partners and form social connections who share similar traits, a phenomenon known as assortative mating or homophily.
The claim is specific, empirical, and falsifiable. Multiple high-quality genetic and psychological studies directly support the premise that humans preferentially associate with and mate with individuals who share similar traits, such as height, education, ancestry, and general characteristics (assortative mating and homophily). No retrieved papers refute the general principle.