Evidence map›Paper›PMID 34987824›Full record

ArticleEvolution, medicine, and public health2021

Age-related change in adult chimpanzee social network integration.

Nicole Thompson González, Zarin Machanda, Emily Otali, Martin N Muller, Drew K Enigk, Richard Wrangham, Melissa Emery Thompson

Open access · goldAbstract read
In one paragraph

Article in Evolution, medicine, and public health, 2021. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 19 papers.

0numbers the graph read from it
0cells of the map it votes in
19citing papers in PubMed
3.5field-weighted citation impact, top 7% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

19 citing papers in PubMed, 24 citations in OpenAlex.

  1. Article
  2. Female Affiliation and Status in Semi-Free-Ranging Chimpanzees.American journal of biological anthropology · 2026
    Article
  3. Article
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  9. Linking energy availability, movement and sociality in a wild primate (Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2024
    Article
  10. Article
  11. Article
  12. How behavioural ageing affects infectious disease.Neuroscience and biobehavioral reviews · 2023
    Review
  13. Article
  14. Review
  15. Social Network Changes in Cotton-Top Tamarins (Animals : an open access journal from MDPI · 2023
    Article
  16. Article
  17. Article
  18. Article
  19. The ontogeny of social networks in wild great tits (Behavioral ecology : official journal of the International Society for Behavioral Ecology
    Article
4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

7 authors at 4 institutions in 2 countries.

Nicole Thompson GonzálezDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA.ORCID https://orcid.org/0000-0002-3195-1277
Zarin MachandaKibale Chimpanzee Project, Fort Portal, Uganda.
Emily OtaliKibale Chimpanzee Project, Fort Portal, Uganda.
Martin N MullerDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA.
Drew K EnigkDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA.
Richard WranghamKibale Chimpanzee Project, Fort Portal, Uganda.
Melissa Emery ThompsonDepartment of Anthropology, University of New Mexico, Albuquerque, NM 87131, USA.
University of New Mexico · USHarvard University · USKibale Chimpanzee Project · UGTufts University · US

Funding

FAIR Data Competency and Machine Learning Readiness for Biomedical ScientistsK12GM088021 · NIGMS · UNIVERSITY OF NEW MEXICO HEALTH SCIS CTR · PI REBECCA S. HARTLEY, Diane Lidke · 2009 to 2026
$16.4M
Molecular Epidemiology and Natural History of SIVcpzR01AI058715 · NIAID · UNIVERSITY OF PENNSYLVANIA · PI HAHN, BEATRICE H · 2004 to 2013
$6.1M
NIAID NIH HHS R01 AI058715NIGMS NIH HHS K12 GM088021
6 · The paper itself

Abstract

backgroundSocial isolation is a key risk factor for the onset and progression of age-related disease and mortality in humans. Nevertheless, older people commonly have narrowing social networks, with influences from both cultural factors and the constraints of senescence. We evaluate evolutionarily grounded models by studying social aging in wild chimpanzees, a system where such influences are more easily separated than in humans, and where individuals are long-lived and decline physically with age. METHODOLOGY: We applied social network analysis to examine age-related changes in social integration in a 7+ year mixed-longitudinal dataset on 38 wild adult chimpanzees (22 females, 16 males). Metrics of social integration included social attractivity and overt effort (directed degree and strength), social roles (betweenness and local transitivity) and embeddedness (eigenvector centrality) in grooming networks.

resultsBoth sexes reduced the strength of direct ties with age (males in-strength, females out-strength). However, males increased embeddedness with age, alongside cliquishness. These changes were independent of age-related changes in social and reproductive status. Both sexes maintained highly repeatable inter-individual differences in integration, particularly in mixed-sex networks. CONCLUSIONS AND IMPLICATIONS: As in humans, chimpanzees appear to experience senescence-related declines in social engagement. However, male social embeddedness and overall sex differences were patterned more similarly to humans in non-industrialized versus industrialized societies. Such comparisons suggest common evolutionary roots to ape social aging and that social isolation in older humans may hinge on novel cultural factors of many industrialized societies. Lastly, individual and sex differences are potentially important mediators of successful social aging in chimpanzees, as in humans.

Indexed as

age-related diseasecomparative gerontologyembeddednesssenescencesocial isolationsocial ties

Identifiers

PMID34987824
PMCPMC8697844
OpenAlexW4235100300

What OpenQuestion holds

Textmetadata
LicenceCC BY
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.