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Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities

The result's identifiers

  • Result code in IS VaVaI

    <a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F00216208%3A11310%2F21%3A10436419" target="_blank" >RIV/00216208:11310/21:10436419 - isvavai.cz</a>

  • Result on the web

    <a href="https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wpVbqIL8S-" target="_blank" >https://verso.is.cuni.cz/pub/verso.fpl?fname=obd_publikace_handle&handle=wpVbqIL8S-</a>

  • DOI - Digital Object Identifier

    <a href="http://dx.doi.org/10.1098/rstb.2020.0403" target="_blank" >10.1098/rstb.2020.0403</a>

Alternative languages

  • Result language

    angličtina

  • Original language name

    Predicting strength from aggressive vocalizations versus speech in African bushland and urban communities

  • Original language description

    The human voice carries information about a vocalizer&apos;s physical strength that listeners can perceive and that may influence mate choice and intrasexual competition. Yet, reliable acoustic correlates of strength in human speech remain unclear. Compared to speech, aggressive nonverbal vocalizations (roars) may function to maximize perceived strength, suggesting that their acoustic structure has been selected to communicate formidability, similar to the vocal threat displays of other animals. Here, we test this prediction in two non-WEIRD African samples: an urban community of Cameroonians and rural nomadic Hadza hunter-gatherers in the Tanzanian bushlands. Participants produced standardized speech and volitional roars and provided handgrip strength measures. Using acoustic analysis and information-theoretic multi-model inference and averaging techniques, we show that strength can be measured from both speech and roars, and as predicted, strength is more reliably gauged from roars than vowels, words or greetings. The acoustic structure of roars explains 40-70% of the variance in actual strength within adults of either sex. However, strength is predicted by multiple acoustic parameters whose combinations vary by sex, sample and vocal type. Thus, while roars may maximally signal strength, more research is needed to uncover consistent and likely interacting acoustic correlates of strength in the human voice. This article is part of the theme issue &apos;Voice modulation: from origin and mechanism to social impact (Part I)&apos;.

  • Czech name

  • Czech description

Classification

  • Type

    J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database

  • CEP classification

  • OECD FORD branch

    10602 - Biology (theoretical, mathematical, thermal, cryobiology, biological rhythm), Evolutionary biology

Result continuities

  • Project

    <a href="/en/project/GA18-10298S" target="_blank" >GA18-10298S: The social perception of sexual dimorphism in human face: A cross-cultural comparison</a><br>

  • Continuities

    P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)

Others

  • Publication year

    2021

  • Confidentiality

    S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů

Data specific for result type

  • Name of the periodical

    Philosophical Transactions of the Royal Society B: Biological Sciences

  • ISSN

    0962-8436

  • e-ISSN

  • Volume of the periodical

    376

  • Issue of the periodical within the volume

    1840

  • Country of publishing house

    GB - UNITED KINGDOM

  • Number of pages

    10

  • Pages from-to

    20200403

  • UT code for WoS article

    000713132600004

  • EID of the result in the Scopus database

    2-s2.0-85119963880