Evidence map›Paper›PMID 25739095›Full record

ArticlePloS one2015

Prevalence of learned grapheme-color pairings in a large online sample of synesthetes.

Nathan Witthoft, Jonathan Winawer, David M Eagleman

Abstract read
In one paragraph

Article in PloS one, 2015. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing 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

17 citing papers in PubMed.

  1. Article
  2. Article
  3. Article
  4. Reduced perceptual narrowing in synesthesia.Proceedings of the National Academy of Sciences of the United States of America · 2020
    Article
  5. Distinct colours in the 'synaesthetic colour palette'.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  6. Deepening understanding of language through synaesthesia: a call to reform and expand.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  7. Synaesthesia: a distinct entity that is an emergent feature of adaptive neurocognitive differences.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  8. Echoes from the past: synaesthetic colour associations reflect childhood gender stereotypes.Philosophical transactions of the Royal Society of London. Series B, Biological sciences · 2019
    Article
  9. 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

3 authors.

Nathan WitthoftDepartment of Psychology, Stanford University, Stanford, California, United States of America.
Jonathan WinawerDepartment of Psychology and Center for Neural Science, New York University, New York, New York, United States of America.
David M EaglemanDepartment of Neuroscience, Baylor College of Medicine, Houston, Texas, United States of America.

Funding

Development of Face Perception: Cross-sectional and Longitudinal InvestigationsR01EY022318 · NEI · STANFORD UNIVERSITY · PI GRILL-SPECTOR, KALANIT · 2012 to 2022
$5.2M
fMRI and Behavioral Studies of Unsupervised Learning in High Level Visual CortexR01EY019279 · NEI · STANFORD UNIVERSITY · PI GRILL-SPECTOR, KALANIT · 2009 to 2013
$1.9M
Multimodal Imaging of Spatiotemporal Integration in the Human Visual SystemR00EY022116 · NEI · NEW YORK UNIVERSITY · PI WINAWER, JONATHAN A · 2013 to 2015
$718k
NEI NIH HHS R00 EY022116NEI NIH HHS R01 EY019279NEI NIH HHS R01EY019279-01A1NEI NIH HHS R01 EY022318
6 · The paper itself

Abstract

In this paper we estimate the minimum prevalence of grapheme-color synesthetes with letter-color matches learned from an external stimulus, by analyzing a large sample of English-speaking grapheme-color synesthetes. We find that at least 6% (400/6588 participants) of the total sample learned many of their matches from a widely available colored letter toy. Among those born in the decade after the toy began to be manufactured, the proportion of synesthetes with learned letter-color pairings approaches 15% for some 5-year periods. Among those born 5 years or more before it was manufactured, none have colors learned from the toy. Analysis of the letter-color matching data suggests the only difference between synesthetes with matches to the toy and those without is exposure to the stimulus. These data indicate learning of letter-color pairings from external contingencies can occur in a substantial fraction of synesthetes, and are consistent with the hypothesis that grapheme-color synesthesia is a kind of conditioned mental imagery.

Indexed as

Color PerceptionLearningHumansPerceptual DisordersReadingSynesthesia

Identifiers

PMID25739095
PMCPMC4349591

What OpenQuestion holds

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LicenceCC BY
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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.