A forced-choice signal-detection paradigm showed that the effect of self-resemblance operated at an unconscious level, since the same participants were unable to detect the presence of their own faces in the above morphs. 33%) of another face, the 22% was chosen consistently as the preferred morph and, in particular, when Self was blended in the partner’s face. When ranking morphs differing in level of amalgamation (i.e., 11% vs. The Self-based morph was also preferred to the morph of their partner’s face blended with the partner’s same-sex “prototype”, although the latter face was (“objectively”) judged more attractive by other individuals. Participants distinctly preferred a “Self-based morph” (i.e., their partner’s face with a small amount of Self’s face blended into it) to other morphed images. Participants chose the most attractive face image of their romantic partner among several variants, where the faces were morphed so as to include only 22% of another face. In the present study, we assessed the role of resemblance to Self’s facial traits in judgments of physical attractiveness. Thus, mate choice may be a balancing of phenotypic similarity and dissimilarity between partners.
Opposing forces influence assortative mating so that one seeks a similar mate while at the same time avoiding inbreeding with close relatives.
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