Evidence map›Paper›PMID 24367098›Full record

ArticleProceedings of the National Academy of Sciences of the United States of America2014

Evidence of Levy walk foraging patterns in human hunter-gatherers.

David A Raichlen, Brian M Wood, Adam D Gordon, Audax Z P Mabulla, Frank W Marlowe, Herman Pontzer

Open access · bronzeAbstract readHistorical Article
In one paragraph

Article in Proceedings of the National Academy of Sciences of the United States of America, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 101 papers.

0numbers the graph read from it
0cells of the map it votes in
101citing papers in PubMed
12.7field-weighted citation impact, top 1% 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

101 citing papers in PubMed, 294 citations in OpenAlex.

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  11. Research on re-searching: interrupted foraging is not disrupted foraging.Cognitive research: principles and implications · 2024
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  14. Smart active particles learn and transcend bacterial foraging strategies.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  15. Size-dependent self-avoidance enables superdiffusive migration in macroscopic unicellulars.Proceedings of the National Academy of Sciences of the United States of America · 2024
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  16. Energetic costs of testosterone in two subsistence populations.American journal of human biology : the official journal of the Human Biology Council · 2023
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  17. Fluctuating landscapes and heavy tails in animal behavior.bioRxiv : the preprint server for biology · 2023
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41 more citing papers are in PubMed but not listed here.

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

6 authors at 6 institutions in 3 countries.

David A RaichlenSchool of Anthropology, University of Arizona, Tucson, AZ 85721.
Brian M Wood
Adam D Gordon
Audax Z P Mabulla
Frank W Marlowe
Herman Pontzer
Hunter College · USUniversity at Albany, State University of New York · USUniversity of Arizona · USUniversity of Cambridge · GBUniversity of Dar es Salaam · TZYale University · US

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

When searching for food, many organisms adopt a superdiffusive, scale-free movement pattern called a Lévy walk, which is considered optimal when foraging for heterogeneously located resources with little prior knowledge of distribution patterns [Viswanathan GM, da Luz MGE, Raposo EP, Stanley HE (2011) The Physics of Foraging: An Introduction to Random Searches and Biological Encounters]. Although memory of food locations and higher cognition may limit the benefits of random walk strategies, no studies to date have fully explored search patterns in human foraging. Here, we show that human hunter-gatherers, the Hadza of northern Tanzania, perform Lévy walks in nearly one-half of all foraging bouts. Lévy walks occur when searching for a wide variety of foods from animal prey to underground tubers, suggesting that, even in the most cognitively complex forager on Earth, such patterns are essential to understanding elementary foraging mechanisms. This movement pattern may be fundamental to how humans experience and interact with the world across a wide range of ecological contexts, and it may be adaptive to food distribution patterns on the landscape, which previous studies suggested for organisms with more limited cognition. Additionally, Lévy walks may have become common early in our genus when hunting and gathering arose as a major foraging strategy, playing an important role in the evolution of human mobility.

Indexed as

Appetitive BehaviorEthnicityGeographic Information SystemsHistory, AncientHumansLikelihood FunctionsLocomotionModels, StatisticalStatistics, NonparametricTanzaniaBrownian motionLévy flightoptimal foragingscale invariancesuperdiffusion

Identifiers

PMID24367098
PMCPMC3896191
OpenAlexW2126861285

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.