Abstract: We investigated the relationship between ratings of voice attractiveness and sexually dimorphic differences in shoulder-to-hip ratios (SHR) and waist-to-hip ratios (WHR), as well as different features of sexual behavior. Opposite-sex voice attractiveness ratings were positively correlated with SHR in males and negatively correlated with WHR in females. For both sexes, ratings of opposite-sex voice attractiveness also predicted reported age of first sexual intercourse, number of sexual partners, number of extra-pair copulation (EPC) partners, and number of partners that they had intercourse with that were involved in another relationship (i.e., were themselves chosen as an EPC partner). Coupled with previous findings showing a relationship between voice attractiveness and bilateral symmetry, these results provide additional evidence that the sound of a person’s voice may serve as an important multidimensional fitness indicator.
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Both males and females whose voices were rated as attractive had sex at an earlier age, had more sexual partners, more EPC partners, and more sexual partners that were involved in a relationship with another person. It is interesting that voice attractiveness ratings by members of the opposite sex were better predictors of sexual behavior than ratings by members of the same sex. Aside from Wilson (1984), who noted that lower voiced male opera singers were more inclined to have sexual affairs with fellow singers, our findings are the first to empirically implicate the existence of a relationship between voice and sexual behavior.
Individuals with attractive voices are perceived more favorably and as having more desirable personality characteristics (Zuckerman & Driver, 1989). Furthermore, the higher the ratings of voice attractiveness, the more the speaker is judged to be similar to the rater and the more the rater would like to affiliate with the speaker (Miyake & Zuckerman, 1993). This bvocal attractiveness stereotypeQ (Zuckerman & Driver, 1989; Zuckerman, Hodgins, & Miyake, 1990) may promote sexual opportunities. Although Zuckerman and Driver (1989) did not find an effect, Collins and Missing (2003) report a substantial correlation between ratings of voice attractiveness and of facial attractiveness in women. Therefore, since ratings of facial attractiveness predict semen quality in males (Soler et al., 2003) and longevity in both males and females (Henderson & Anglin, 2003), voice attractiveness may be an indicator (albeit indirect) of other fitness-related features as well.
Also: Men's voices and women's choices. Sarah A.Collins. Animal Behaviour, Volume 60, Issue 6, December 2000, Pages 773-780. https://doi.org/10.1006/anbe.2000.1523
Abstract: I investigated the relationship between male human vocal characteristics and female judgements about the speaker. Thirty-four males were recorded uttering five vowels and measures were taken, from power spectrums, of the first five harmonic frequencies, overall peak frequency and formant frequencies (emphasized, resonance, frequencies within the vowel). Male body measures were also taken (age, weight, height, and hip and shoulder width) and the men were asked whether they had chest hair. The recordings were then played to female judges, who were asked to rate the males' attractiveness, age, weight and height, and to estimate the muscularity of the speaker and whether he had a hairy chest. Men with voices in which there were closely spaced, low-frequency harmonics were judged as being more attractive, older and heavier, more likely to have a hairy chest and of a more muscular body type. There was no relationship between any vocal and body characteristic. The judges' estimates were incorrect except for weight. They showed extremely strong agreement on all judgements. The results imply that there could be sexual selection through female choice for male vocal characteristics, deeper voices being preferred. However, the function of the preference is unclear given that the estimates were generally incorrect.
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