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Research on heterosexual mating has demonstrated that acoustic parameters (e.g., pitch) of men’s voices influence their attractiveness to women and appearance of status and formidability to other men. However, little is known about how men’s tendency to clearly articulate their speech influences these important social perceptions. In the current study, we used a repeated-measures design to investigate how men’s articulatory clarity or conformity influenced women’s (N = 45) evaluations of men’s attractiveness for both short- and long-term relationships, and men's (N = 46) evaluations of physical formidability and prestige. Results largely supported our hypotheses: men who enunciated phonemes more distinctly were more attractive to women for long-term relationships than short-term relationships and were perceived by other men to have higher prestige than physical dominance. These findings suggest that aspects of articulatory behavior that influence perceptions of prestige and long-term mating attractiveness may indicate an early social history characterized by high socioeconomic status, likely owing to crystallization of articulatory patterns during the critical period of language development. These articulatory patterns may also be honest signals of condition or disposition owing to the nature of complex, multicomponent traits, which deserve further empirical attention.

Self-domestication is a process by which organisms become domesticated as a product or by-product of natural selection. It is a multigenerational process by which animals become tame, but without human direction. Evidence suggests that self-domestication emerges as a result of selection against aggression, which, in theory, can occur in myriad ways. Like domestication, selfdomestication results in a relatively consistent set of phenotypic changes that emerge across species and manifest morphologically, physiologically, behaviorally, and cognitively. This set of phenotypic changes is known as "the domestication syndrome."

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