“…In initial attraction settings, similarity-matching effects of personality, demographic variables, and interests/values on romantic evaluations tend to be quite small (Luo & Zhang, 2009, Montoya et al, 2008Tidwell et al, 2013). In established relationships, similarity-matching on personality traits (e.g., the Big Five) typically explains less than 1% of the variance in relationship quality (Chopik & Lucas, 2019;Dyrenforth et al, 2010;Malouff et al, 2010;Solomon & Jackson, 2014;vanScheppingenetal.,2019), andthis same conclusion applies to demographicvariables,interests,attachment style, and values (Lozano et al, 2021;Luo, 2009;Watson et al, 2004). Relatedly, some studies have also examined whether people evaluate potential partners more positively to the extent that they are similar on traits that are classically related to the concept of mate value (e.g., attractiveness, popularity), but these studies have also documented very small effect sizes Luo & Zhang, 2009;Tidwell et al, 2013;Wurst et al, 2018).…”