A theory of the evolution of low voice pitch in men suggests that (a) voice pitch is used as an indicator of success in mate competition; (b) pitch is used as an indicator of dominance more for men’s voices than women’s; (c) pitch affects dominance ratings more than attractiveness ratings. While early studies supported these ideas, several subsequent studies have failed to replicate these results with mainly male raters, because of the idea that men’s perceptions affect selection more than women’s do.
We tested the extent to which these findings apply to women’s perceptions of the aforementioned characteristics, as well as to other characteristics related to voice pitch and dominance: perceived body size, competitiveness, cooperativeness, socio-economic status, and attractiveness. We manipulated pitch in men’s and women’s voices and tested women’s perceptions thereof. Women chose low voices as belonging to a speaker that is more physically/socially dominant, less cooperative, larger, higher in socio-economic status, and (for men’s voices) more attractive. In contrast to hypotheses of theories on the evolution of low voice pitch in men, pitch had no effect on perceptions of competitiveness, nor did it affect either physical or social dominance ratings more than it affected attractiveness ratings. Surprisingly, pitch affected dominance perceptions of women’s voices more than men’s. Thus, despite previous evidence that some men modify their voices in competitive scenarios, our data are unable to support the idea that this information is used by women to infer dominance related to competitiveness. We contribute to the growing literature that finds no difference in the amount that voice pitch affects dominance and attractiveness ratings or fails to find stronger effects for male than female voices. Our data are consistent with theories that dominance ratings are the result of a general response bias to stimuli varying in pitch. / Thesis / Master of Science (MSc) / Low voice pitch is associated with perceptions of dominance, size, attractiveness, higher socio-economic status, and low cooperativeness. Since men lower their voice pitch in competitive scenarios, we predicted low pitch would be tied to perceptions of competitiveness of the speaker. We manipulated pitch in men’s and women’s voices, and female participants chose which voice they thought belonged to the person who was more physically/socially dominant, competitive, cooperative, larger, higher in socio-economic status, and more attractive. Women chose low voices as being more physically/socially dominant, less cooperative, larger, higher in socio-economic status, and (for male voices only) more attractive than higher voices. Pitch had no effect on perceptions of competitiveness, it did not affect perceptions of dominance for male speakers more than female speakers, neither did it affect perceptions of dominance more than attractiveness. This challenges the idea that low pitch in men evolved to primarily signal success in intrasexual competition.
| Identifer | oai:union.ndltd.org:mcmaster.ca/oai:macsphere.mcmaster.ca:11375/24184 |
| Date | 23 November 2018 |
| Creators | Kocic, Tina |
| Contributors | Feinberg, David, Psychology |
| Source Sets | McMaster University |
| Language | English |
| Detected Language | English |
| Type | Thesis |
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