Evidence map›Paper›PMID 27152221›Full record

ArticleRoyal Society open science2016

Do grandparents compete with or support their grandchildren? In Guatemala, paternal grandmothers may compete, and maternal grandmothers may cooperate.

Paula Sheppard, Rebecca Sear

Open access · goldAbstract read
In one paragraph

Article in Royal Society open science, 2016. 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
1.6field-weighted citation impact, top 16% 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, 41 citations in OpenAlex.

  1. Trial
  2. Demography of grandmothering: a case study in Agta foragers.Proceedings. Biological sciences · 2025
    Article
  3. Article
  4. Article
  5. Article
  6. Article
  7. Article
  8. Adoption, Fostering, and Parental Absence in Vanuatu.Human nature (Hawthorne, N.Y.) · 2023
    Article
  9. How prenatal cortisol levels relate to grandmother-mother relationships among a cohort of Latina women.American journal of human biology : the official journal of the Human Biology Council · 2023
    Article
  10. Article
  11. Article
  12. Article
  13. Does maternal grandmother's support improve maternal and child nutritional health outcomes? Evidence from Merida, Yucatan, Mexico.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Article
  14. Children are important too: juvenile playgroups and maternal childcare in a foraging population, the Agta.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2021
    Article
  15. Article
  16. Observational
  17. Article
  18. Article
  19. Grandparental co-residence and grandchild survival: the role of resource competition in a pre-industrial population.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

2 authors at 1 institution in 1 country.

Paula SheppardLondon School of Hygiene and Tropical Medicine , Keppel Street, London WC1E 7HT , UK.
Rebecca SearLondon School of Hygiene and Tropical Medicine , Keppel Street, London WC1E 7HT , UK.
Google (United States) · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

Previous research has found that the presence of grandparents, particularly grandmothers, is often positively associated with child survival. Little research has explored the potential mechanisms driving these associations. We use data from rural Guatemala to test whether contact with and direct investment (advice and financial) from grandparents is associated with child health, proxied by height. Our results demonstrate the complexity of family relationships and their influence on child health, suggesting that both cooperative and competitive relationships exist within the family. The clearest evidence we find for grandparental influence is that having a living paternal grandmother tends to be negatively associated with child height. By contrast, contact with maternal kin appears broadly to be beneficial for child height, although these relationships are weaker. These patterns are mirrored in maternal body mass index, suggesting grandparental influence acts partly through maternal health. These findings support the hypotheses that, under conditions of limited resources, family relationships may be competitive within the family lineage which shares the same resource base, but cooperative when there are few costs to cooperation. Finally, financial assistance from maternal grandfathers is positively correlated with infant length but negatively with the height of older children, perhaps because the receipt of financial support is an indication of need. The provision of advice shows no associations with child height.

Indexed as

child healthcooperative breedinggrandfathergrandmotherheightresource competition

Identifiers

PMID27152221
PMCPMC4852644
OpenAlexW2342024088

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.