Evidence map›Paper›PMID 24762923›Full record

ArticleCognition2014

Rhesus monkeys (Macaca mulatta) map number onto space.

Caroline B Drucker, Elizabeth M Brannon

Abstract read
In one paragraph

Article in Cognition, 2014. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 54 papers.

0numbers the graph read from it
0cells of the map it votes in
54citing 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

54 citing papers in PubMed.

  1. Article
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  3. Review
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  5. Article
  6. Cognitive bridge between geometric and numerical learning in monkeys.Proceedings of the National Academy of Sciences of the United States of America · 2025
    Article
  7. Article
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  15. Reply to Pitt et al.: Evidence from bees is consistent with a biological origin of a left-to-right mental number line.Proceedings of the National Academy of Sciences of the United States of America · 2023
    Article
  16. Article
  17. An insect brain organizes numbers on a left-to-right mental number line.Proceedings of the National Academy of Sciences of the United States of America · 2022
    Article
  18. Article
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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

2 authors.

Caroline B DruckerDepartment of Neurobiology and Center for Cognitive Neuroscience, Duke University, Box 90999, Durham, NC 27708, United States. Electronic address: caroline.drucker@duke.edu.
Elizabeth M BrannonDepartment of Psychology and Neuroscience and Center for Cognitive Neuroscience, Duke University, Box 90999, Durham, NC 27708, United States. Electronic address: brannon@duke.edu.

Funding

Contributions of Areas LIP and VIP to Numerical BehaviorR01EY019303 · NEI · DUKE UNIVERSITY · PI PLATT, MICHAEL L · 2009 to 2012
$1.8M
NEI NIH HHS R01 EY019303NEI NIH HHS R01-EY-019303
6 · The paper itself

Abstract

Humans map number onto space. However, the origins of this association, and particularly the degree to which it depends upon cultural experience, are not fully understood. Here we provide the first demonstration of a number-space mapping in a non-human primate. We trained four adult male rhesus macaques (Macaca mulatta) to select the fourth position from the bottom of a five-element vertical array. Monkeys maintained a preference to choose the fourth position through changes in the appearance, location, and spacing of the vertical array. We next asked whether monkeys show a spatially-oriented number mapping by testing their responses to the same five-element stimulus array rotated ninety degrees into a horizontal line. In these horizontal probe trials, monkeys preferentially selected the fourth position from the left, but not the fourth position from the right. Our results indicate that rhesus macaques map number onto space, suggesting that the association between number and space in human cognition is not purely a result of cultural experience and instead has deep evolutionary roots.

Indexed as

AnimalsCognitionConcept FormationMacaca mulattaMaleOrientationRotationSpace PerceptionMonkeysNumbersOrdinal representationSNARC effectSpace

Identifiers

PMID24762923
PMCPMC4031030

What OpenQuestion holds

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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.