Evidence map›Paper›PMID 29440526›Full record

ReviewPhilosophical transactions of the Royal Society of London. Series B, Biological sciences2018

On the absence of a correlation between population size and 'toolkit size' in ethnographic hunter-gatherers.

Kenichi Aoki

Abstract readReview
In one paragraph

Review in Philosophical transactions of the Royal Society of London. Series B, Biological sciences, 2018. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 3 papers.

0numbers the graph read from it
0cells of the map it votes in
3citing 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

3 citing papers in PubMed.

  1. Forward and backward modeling of cultural evolutionary processes.Proceedings of the National Academy of Sciences of the United States of America · 2024
    Article
  2. Article
  3. Bridging cultural gaps: interdisciplinary studies in human cultural evolution.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2018
    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

1 author.

Kenichi AokiOrganization for the Strategic Coordination of Research and Intellectual Properties, Meiji University, 4-21-1 Nakano, Tokyo 164-8525, Japan kenaoki@meiji.ac.jp.ORCID 0000-0002-8426-4091

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

In apparent contradiction to the theoretically predicted effect of population size on the quality/quantity of material culture, statistical analyses on ethnographic hunter-gatherers have shown an absence of correlation between population size and toolkit size. This has sparked a heated, if sometimes tangential, debate as to the usefulness of the theoretical models and as to what modes of cultural transmission humans are capable of and hunter-gatherers rely on. I review the directly relevant theoretical literature and argue that much of the confusion is caused by a mismatch between the theoretical variable and the empirical observable. I then confirm that a model incorporating the appropriate variable does predict a positive association between population size and toolkit size for random oblique, vertical, best-of-

Indexed as

Cultural EvolutionLife StylePopulation DensityAnthropology, CulturalHumansModels, Biologicalethnographic observablemode of cultural transmissiontheoretical variablevariable population size

Identifiers

PMID29440526
PMCPMC5812973

What OpenQuestion holds

Textmetadata
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.