Evidence map›Paper›PMID 27684956›Full record

ArticlePloS one

The SNARC Effect in Chinese Numerals: Do Visual Properties of Characters and Hand Signs Influence Number Processing?

Karl K Kopiske, Christian Löwenkamp, Owino Eloka, Florian Schiller, Chung-Shan Kao, Chaohua Wu, Xiaorong Gao, Volker H Franz

Open access · goldAbstract read
In one paragraph

Article in PloS one. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 7 papers.

0numbers the graph read from it
0cells of the map it votes in
7citing papers in PubMed
0.4field-weighted citation impact, top 30% 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

7 citing papers in PubMed, 15 citations in OpenAlex.

  1. Article
  2. Gradience as a cognitive principle for evaluating numerical notations.Proceedings of the National Academy of Sciences of the United States of America · 2026
    Article
  3. Article
  4. 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

8 authors at 3 institutions in 3 countries.

Karl K KopiskeIstituto Italiano di Tecnologia (IIT), Center for Neuroscience and Cognitive Systems@UniTn, Corso Bettini, 31, 38068 Rovereto, TN, Italy.ORCID http://orcid.org/0000-0001-7747-5774
Christian LöwenkampUniversity of Hamburg, Institute of Psychology, Von-Melle-Park 5, 20146 Hamburg, Germany.
Owino ElokaUniversity of Hamburg, Institute of Psychology, Von-Melle-Park 5, 20146 Hamburg, Germany.
Florian SchillerJustus Liebig University Giessen, Department of General Psychology, Otto-Behaghel-Straße 10, 35394 Giessen, Germany.
Chung-Shan KaoUniversity of Hamburg, Institute of Psychology, Von-Melle-Park 5, 20146 Hamburg, Germany.
Chaohua WuTsinghua University, Department of Biomedical Engineering, Beijing 100084, PR China.
Xiaorong GaoTsinghua University, Department of Biomedical Engineering, Beijing 100084, PR China.
Volker H FranzUniversity of Hamburg, Institute of Psychology, Von-Melle-Park 5, 20146 Hamburg, Germany.
Universität Hamburg · DETsinghua University · CNJustus-Liebig-Universität Gießen · DE

Funding

No grant is acknowledged in the PubMed record.

6 · The paper itself

Abstract

The SNARC effect refers to an association of numbers and spatial properties of responses that is commonly thought to be amodal and independent of stimulus notation. We tested for a horizontal SNARC effect using Arabic digits, simple-form Chinese characters and Chinese hand signs in participants from Mainland China. We found a horizontal SNARC effect in all notations. This is the first time that a horizontal SNARC effect has been demonstrated in Chinese characters and Chinese hand signs. We tested for the SNARC effect in two experiments (parity judgement and magnitude judgement). The parity judgement task yielded clear, consistent SNARC effects in all notations, whereas results were more mixed in magnitude judgement. Both Chinese characters and Chinese hand signs are represented non-symbolically for low numbers and symbolically for higher numbers, allowing us to contrast within the same notation the effects of heavily learned non-symbolic vs. symbolic representation on the processing of numbers. In addition to finding a horizontal SNARC effect, we also found a robust numerical distance effect in all notations. This is particularly interesting as it persisted when participants reported using purely visual features to solve the task, thereby suggesting that numbers were processed semantically even when the task could be solved without the semantic information.

Identifiers

PMID27684956
PMCPMC5042428
OpenAlexW2526702700

What OpenQuestion holds

Textmetadata
LicenceCC BY
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.