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Child-Directed Speech Is Infrequent in a Forager-Farmer Population: A Time Allocation Study
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This article provides an estimation of how frequently, and from whom, children aged 0–11 years (Ns between 9 and 24) receive one-on-one verbal input among Tsimane forager-horticulturalists of lowland Bolivia. Analyses of systematic daytime behavioral observations reveal < 1 min per daylight hour is spent talking to children younger than 4 years of age, which is 4 times less than estimates for others present at the same time and place. Adults provide a majority of the input at 0–3 years of age but not afterward. When integrated with previous work, these results reveal large cross-cultural variation in the linguistic experiences provided to young children. Consideration of more diverse human populations is necessary to build generalizable theories of language acquisition.
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“In addition, caregivers from different cultures may not all be equally talkative to their infants (see Cristia et al., 2019) which could also influence their response rates to infants' prelinguistic behaviors.”
From The role of dyadic combinations of infants' behaviors and caregivers' verbal and multimodal responses in predicting vocabulary outcomes (2025) · cites this paper as Cristia et al., 2019
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Metadata
- Authors
- Cristia, A., Dupoux, E., Gurven, M., & Stieglitz, J.
- Venue
- Child Development
- Publisher
- Oxford University Press (OUP)
- Published
- 2019-04-30
- Volume
- 90
- Issue
- 3
- Pages
- 759-773
- ISSN
- 0009-3920 (ISSN-L)
- 1467-8624
- OpenAlex
- W2765364385
- Cited by
- 284
- References
- 62
- FWCI
- 44.48
- Type
- journal article
- Language
- en
- Open access
- green
- Licence
- Funders
- National Institutes of Health/National Institute on Aging (R01AG024119)
- Agence Nationale de la Recherche (ANR-14-CE30-0003 MechELex, ANR-10-IDEX-0001-02 PSL*, ANR-10-LABX-0087 IEC, ANR-2010-BLAN-1901-1 BOOTLANG, ANR‐14‐CE30‐0003 MechELex, ANR‐10‐IDEX‐0001‐02 PSL*, ANR‐10‐LABX‐0087 IEC, ANR‐2010‐BLAN‐1901‐1 BOOTLANG)
- European Research Council (E-2011-AdG 295810 BOOTPHON))
- Fondation de France
- National Science Foundation (BCS-0136274, BCS-0422690, BCS‐0136274, BCS‐0422690)
- ANR Labex IAST
- National Institutes of Health (R01AG024119)
- H2020 European Research Council (E‐2011‐AdG 295810 BOOTPHON))
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