Evidence map›Paper›PMID 27404514›Full record

ArticleScientific reports2016

Competition for Cooperation: variability, benefits and heritability of relational wealth in hunter-gatherers.

Nikhil Chaudhary, Gul Deniz Salali, James Thompson, Aude Rey, Pascale Gerbault, Edward Geoffrey Jedediah Stevenson, Mark Dyble, Abigail E Page, Daniel Smith, Ruth Mace and 2 more

Abstract read
In one paragraph

Article in Scientific reports, 2016. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 11 papers.

0numbers the graph read from it
0cells of the map it votes in
11citing 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

11 citing papers in PubMed.

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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

12 authors.

Nikhil ChaudharyDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Gul Deniz SalaliDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
James ThompsonDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Aude ReyDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Pascale GerbaultDepartment of Genetics, Evolution and Environment, University College London, London WC1E 6BT, United Kingdom.
Edward Geoffrey Jedediah StevensonDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Mark DybleDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Abigail E PageDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Daniel SmithDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Ruth MaceDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Lucio ViniciusDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.
Andrea Bamberg MiglianoDepartment of Anthropology, University College London, London WC1H 0BW, United Kingdom.

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Many defining human characteristics including theory of mind, culture and language relate to our sociality, and facilitate the formation and maintenance of cooperative relationships. Therefore, deciphering the context in which our sociality evolved is invaluable in understanding what makes us unique as a species. Much work has emphasised group-level competition, such as warfare, in moulding human cooperation and sociality. However, competition and cooperation also occur within groups; and inter-individual differences in sociality have reported fitness implications in numerous non-human taxa. Here we investigate whether differential access to cooperation (relational wealth) is likely to lead to variation in fitness at the individual level among BaYaka hunter-gatherers. Using economic gift games we find that relational wealth: a) displays individual-level variation; b) provides advantages in buffering food risk, and is positively associated with body mass index (BMI) and female fertility; c) is partially heritable. These results highlight that individual-level processes may have been fundamental in the extension of human cooperation beyond small units of related individuals, and in shaping our sociality. Additionally, the findings offer insight in to trends related to human sociality found from research in other fields such as psychology and epidemiology.

Indexed as

Cooperative BehaviorInterpersonal RelationsSocial BehaviorAdultBody Mass IndexFemaleHumansMaleMiddle AgedPopulation Groups

Identifiers

PMID27404514
PMCPMC4941516

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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.