The DOI matches its Crossref record.
Origins and evolution of language and speech
Overview
The claims and statistics of this paper haven’t been checked yet.
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Integrity signals
Registry
Cites
Statistics
Verification
Claims the paper makes
The claims and statistics of this paper haven’t been checked yet.
Run the check — free, no account needed. It reads the open-access text and checks the sources it cites.
Self-check
Percentages, sums and reported differences re-computed from the paper’s own numbers.
The self-check needs the paper’s full text.
Citations
Cited by
Rhythmical stereotypies in normal human infants
Thelen, E. (1979) · Animal Behaviour · doi:10.1016/0003-3472(79)90006-x · Cited by 573
Why Does Cerebral Cortex Fissure and Fold?
Welker, W. (1990) · Cerebral Cortex · doi:10.1007/978-1-4615-3824-0_1 · Cited by 425
Asymmetries of the skull and handedness
LeMay, M. (1977) · Journal of the Neurological Sciences · doi:10.1016/0022-510x(77)90239-8 · Cited by 313
Spontaneous tool use and sensorimotor intelligence in Cebus compared with other monkeys and apes
Chevalier-Skolnikoff, S. (1989) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00057678 · Cited by 155
Apples and oranges: The pitfalls of comparative intelligence
Savage, A., & Snowdon, C. T. (1989) · Behavioral and Brain Sciences · doi:10.1017/s0140525x00057897 · Cited by 7
Metadata
- Authors
- Ettlinger, G.
- Venue
- Neuropsychologia
- Publisher
- Elsevier BV
- Published
- 1977-01
- Volume
- 15
- Issue
- 6
- Pages
- 849
- ISSN
- 0028-3932 (ISSN-L)
- OpenAlex
- W2317076102
- Cited by
- 347
- References
- 0
- FWCI
- 637.36
- Type
- journal article
- Language
- en
- Open access
- closed
About these checks
Registry, retraction, Cites and statistics results are computed, not judged, with one exception: a printed reference that no index lists is read once by a model before it counts as a citation error. Claims are extracted by a model and kept only when their quote appears verbatim in the text; each cited source is then checked, with a model’s help, for whether it says what the claim relies on. Those verdicts can be wrong — read the claim’s quote and the cited source before relying on one.
Statistics and arithmetic are recomputed, not judged.
Confidence bands are shown only for fields calibrated on our annotated test set. None is calibrated yet, so no band is shown.
What counts as a claim ›How we measure confidence ›How we check this ›
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How to cite
Cite CoChat for the checks on this page, and the paper for its own findings.
- This page
- CoChat. (2026). Citation check: Origins and evolution of language and speech. https://app.cochat.ai/papers/10.1016/0028-3932(77)90022-7
- The paper
- Ettlinger, G. (1977). Origins and evolution of language and speech. Neuropsychologia. https://doi.org/10.1016/0028-3932(77)90022-7
Data sources
Bibliographic data: Semantic Scholar, OpenAlex, Crossref.
Contains information from the Semantic Scholar Academic Graph Datasets, made available under the ODC Attribution License (ODC-BY 1.0).
Semantic Scholar’s data is described in: Kinney, R., et al. (2023). The Semantic Scholar Open Data Platform. arXiv:2301.10140.
