ArticleProceedings of the National Academy of Sciences of the United States of America2020
Ostrich eggshell bead strontium isotopes reveal persistent macroscale social networking across late Quaternary southern Africa.
Article in Proceedings of the National Academy of Sciences of the United States of America, 2020. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 18 papers.
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.
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.
Who cites it
18 citing papers in PubMed.
- The Evolutionary-Ecological Basis of Xenophilia.Human nature (Hawthorne, N.Y.) · 2026Article
- Global compilation of bioavailable strontium isotope data.Scientific data · 2026Article
- Article
- Strontium isoscapes for provenance, mobility and migration: the way forward.Royal Society open science · 2025Review
- Cultural evolution, social ratcheting and the evolution of human division of labour.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2025Article
- Strontium isoscape of sub-Saharan Africa allows tracing origins of victims of the transatlantic slave trade.Nature communications · 2024Article
- Ochre communities of practice in Stone Age Eswatini.Nature communications · 2024Article
- Why the geosciences are becoming increasingly vital to the interpretation of the human evolutionary record.Nature ecology & evolution · 2023Review
- Paleolakes and socioecological implications of last glacial "greening" of the South African interior.Proceedings of the National Academy of Sciences of the United States of America · 2023Article
- Human interactions with tropical environments over the last 14,000 years at Iho Eleru, Nigeria.iScience · 2023Article
- Ancient proteins resolve controversy over the identity ofProceedings of the National Academy of Sciences of the United States of America · 2022Article
- A late Middle Pleistocene Middle Stone Age sequence identified at Wadi Lazalim in southern Tunisia.Scientific reports · 2022Article
- Article
- The origins of human cumulative culture: from the foraging niche to collective intelligence.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2022Article
- Article
- Article
- Profile of Joel D. Blum.Proceedings of the National Academy of Sciences of the United States of America · 2020Article
- Article
Corrections and comments
PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.
Authors and funding
6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
Hunter-gatherer exchange networks dampen subsistence and reproductive risks by building relationships of mutual support outside local groups that are underwritten by symbolic gift exchange.
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What OpenQuestion holds
Registered trials
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.