Evidence map›Paper›PMID 39710792›Full record

ArticlePsychological research2024

One direction? Cultural aspects of the mental number line beyond reading direction.

Merve Bulut, Lilly Roth, Narjes Bahreini, Krzysztof Cipora, Ulf Dietrich Reips, Hans-Christoph Nuerk

Abstract read
In one paragraph

Article in Psychological research, 2024. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 8 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
8citing papers in PubMed, 1 pooled it
–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

8 citing papers in PubMed, 1 synthesis or guideline pooled it.

  1. Pooled it
  2. Article
  3. Review
  4. Article
  5. Article
  6. Culture shapes the SNARC-like effect for visual speed.Psychonomic bulletin & review · 2026
    Article
  7. Article
  8. 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

6 authors.

Merve BulutDepartment of Psychology, Yaşar University, Izmir, Turkey.ORCID http://orcid.org/0000-0002-4744-2944
Lilly RothDepartment of Psychology, University of Tuebingen, Schleichstrasse 4, 72072, Tuebingen, Germany.ORCID http://orcid.org/0000-0002-2690-0504
Narjes BahreiniDepartment of Psychology, University of Tuebingen, Schleichstrasse 4, 72072, Tuebingen, Germany.ORCID http://orcid.org/0009-0000-7324-8793
Krzysztof CiporaDepartment of Mathematics Education, Loughborough University, Loughborough, UK.ORCID http://orcid.org/0000-0003-0077-9336
Ulf Dietrich ReipsDepartment of Psychology, University of Konstanz, Constance, Germany.ORCID http://orcid.org/0000-0002-1566-4745
Hans-Christoph NuerkDepartment of Psychology, University of Tuebingen, Schleichstrasse 4, 72072, Tuebingen, Germany. hc.nuerk@uni-tuebingen.de.ORCID http://orcid.org/0000-0002-0331-7498

Funding

Deutsche Forschungsgemeinschaft NU 265/8-1Türkiye Bilimsel ve Teknolojik Araştırma Kurumu 1059B142200008UK Research and Innovation ES/W002914/1
6 · The paper itself

Abstract

Spatial-Numerical Associations (SNAs) refer to the demonstrations of spatial processing of numbers. The Mental Number Line (MNL) is a representation model describing numbers as aligning left-to-right (LR) and was suggested to account for directional biases in participants' responses during numerical tasks. One common behavioral demonstration of this is the Spatial-Numerical Associations of Response Codes (SNARC) effect, which describes faster left-/right-hand responses to smaller/larger numbers, respectively. The MNL, and, consequently, directional SNAs, show variabilities across different cultures. Reading direction is considered to be the main factor in explaining these differences. In line with this, individuals with right-to-left (RL) reading habits show a weaker or even reverse SNARC effect. In the present study, we investigated whether SNAs are influenced not only by reading direction, but also by cultural directional preferences such as drawing lines, arranging objects, imagining objects (i.e., rightward or leftward facing), or representing events in time (i.e., mentally representing the past/future on the left/right, respectively). To test this hypothesis, we measured the cultural directional preferences and the SNARC effect across three cultures in an online setup; German, Turkish, and Iranian. LR preferences in the Cultural Directional Preferences Questionnaire were most prominent in German participants, intermediate in Turkish participants, and least prominent in Iranian participants. In line with this, the LR SNARC effect was strongest in German, intermediate in Turkish, and weakest (but not RL) in Iranian culture. These findings suggest that cultural directional preferences are involved in the emergence of adult SNAs in addition to the reading direction.

Indexed as

Cross-Cultural ComparisonReadingSpace PerceptionAdolescentAdultFemaleGermanyHumansIranMaleMathematical ConceptsReaction TimeTurkeyYoung Adult

Identifiers

PMID39710792
PMCPMC11663824

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.