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Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities
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Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities
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In: ISSN: 0962-8436 ; EISSN: 1471-2970 ; Philosophical Transactions of the Royal Society B: Biological Sciences ; https://hal.archives-ouvertes.fr/hal-03501108 ; Philosophical Transactions of the Royal Society B: Biological Sciences, Royal Society, The, 2021, 376 (1840), ⟨10.1098/rstb.2020.0403⟩ (2021)
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Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications
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In: ISSN: 1744-9561 ; Biology Letters ; https://hal.archives-ouvertes.fr/hal-03501104 ; Biology Letters, Royal Society, The, 2021, 17 (9), ⟨10.1098/rsbl.2021.0356⟩ (2021)
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Supplementary material from "Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications" ...
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Supplementary material from "Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications" ...
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Dataset from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Supplementary tables from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Recording script from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Dataset from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Recording script from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Supplementary tables from Human voice pitch measures are robust across a variety of speech recordings: methodological and theoretical implications ...
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Volitional exaggeration of body size through fundamental and formant frequency modulation in humans
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Individual differences in cortisol stress response predict increases in voice pitch during exam stress
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Volitional exaggeration of body size through fundamental and formant frequency modulation in humans
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Voice and Handgrip Strength Predict Reproductive Success in a Group of Indigenous African Females
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Abstract:
Evolutionary accounts of human traits are often based on proxies for genetic fitness (e.g., number of sex partners, facial attractiveness). Instead of using proxies, actual differences in reproductive success is a more direct measure of Darwinian fitness. Certain voice acoustics such as fundamental frequency and measures of health such as handgrip strength correlate with proxies of fitness, yet there are few studies showing the relation of these traits to reproduction. Here, we explore whether the fundamental frequency of the voice and handgrip strength account for differences in actual reproduction among a population of natural fertility humans. Our results show that both fundamental frequency and handgrip strength predict several measures of reproductive success among a group of indigenous Namibian females, particularly amongst the elderly, with weight also predicting reproductive outcomes among males. These findings demonstrate that both hormonally regulated and phenotypic quality markers can be used as measures of Darwinian fitness among humans living under conditions that resemble the evolutionary environment of Homo sapiens. We also argue that these findings provide support for the Grandmother Hypothesis.
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Keyword:
Research Article
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URL: http://www.ncbi.nlm.nih.gov/pmc/articles/PMC3411669 https://doi.org/10.1371/journal.pone.0041811 http://www.ncbi.nlm.nih.gov/pubmed/22870251
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