Evidence map›Paper›PMID 30397113›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2018

Population-specific social dynamics in chimpanzees.

Edwin J C van Leeuwen, Katherine A Cronin, Daniel B M Haun

Abstract read
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 28 papers.

0numbers the graph read from it
0cells of the map it votes in
28citing papers in PubMed
–field-weighted citation impact
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

28 citing papers in PubMed.

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  7. Group-level signatures in bonobo sociality.Evolutionary human sciences · 2024
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  13. Laughter, play faces and mimicry in animals: evolution and social functions.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022
    Review
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4 · The record

Corrections and comments

5 · Who and what money

Authors and funding

3 authors.

Edwin J C van LeeuwenSchool of Psychology and Neuroscience, University of St Andrews, KY16 9JP St Andrews, Scotland; ejcvanleeuwen@gmail.com.
Katherine A CroninLester E. Fisher Center for the Study and Conservation of Apes, Lincoln Park Zoo, Chicago, IL 60614.ORCID 0000-0003-3208-4870
Daniel B M HaunLeipzig Research Centre for Early Child Development, Faculty of Education, Leipzig University, 04109 Leipzig, Germany.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Understanding intraspecific variation in sociality is essential for characterizing the flexibility and evolution of social systems, yet its study in nonhuman animals is rare. Here, we investigated whether chimpanzees exhibit population-level differences in sociality that cannot be easily explained by differences in genetics or ecology. We compared social proximity and grooming tendencies across four semiwild populations of chimpanzees living in the same ecological environment over three consecutive years, using both linear mixed models and social network analysis. Results indicated temporally stable, population-level differences in dyadic-level sociality. Moreover, group cohesion measures capturing network characteristics beyond dyadic interactions (clustering, modularity, and social differentiation) showed population-level differences consistent with the dyadic indices. Subsequently, we explored whether the observed intraspecific variation in sociality could be attributed to cultural processes by ruling out alternative sources of variation including the influences of ecology, genetics, and differences in population demographics. We conclude that substantial variation in social behavior exists across neighboring populations of chimpanzees and that this variation is in part shaped by cultural processes.

Indexed as

Cooperative BehaviorModels, StatisticalSocial ConformityAnimalsCompetitive BehaviorFemaleGroomingMalePan troglodytesPopulation DynamicsSocial DominanceZambiaanimal culturebehavioral diversitychimpanzeessocialitysocial learning

Identifiers

PMID30397113
PMCPMC6233085

What OpenQuestion holds

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Registered trials

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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.