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Related Experiment Video

Updated: Jul 7, 2026

Automated, Quantitative Cognitive/Behavioral Screening of Mice: For Genetics, Pharmacology, Animal Cognition and Undergraduate Instruction

Automated, Quantitative Cognitive/Behavioral Screening of Mice: For Genetics, Pharmacology, Animal Cognition and Undergraduate Instruction

Published on: February 26, 2014

The SNARC effect does not imply a mental number line.

Seppe Santens¹, Wim Gevers

¹Department of Experimental Psychology, Ghent University, H. Dunantlaan 2, B-9000 Gent, Belgium. seppe.santens@ugent.be

|March 4, 2008

Summary

This study investigated the Spatial-Numerical Association of Response Codes (SNARC) effect. Results show small numbers map to close responses and large numbers to far responses, supporting categorization over direct mapping.

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Area of Science:

Cognitive Psychology
Neuroscience
Spatial Cognition

Background:

The Spatial-Numerical Association of Response Codes (SNARC) effect describes the association between number magnitude and spatial location.
Two main accounts exist: direct mapping and intermediate categorization.
Understanding the SNARC effect's underlying mechanisms is crucial for cognitive science.

Purpose of the Study:

To directly contrast the direct mapping and categorization accounts of the SNARC effect.
To investigate if the SNARC effect holds with a novel close/far response dimension.
To determine the representational basis of the spatial-numerical association.

Main Methods:

Participants performed a magnitude comparison task.
A unimanual close/far response dimension was used, differing from typical bimanual left/right responses.
Response data was analyzed for associations with number magnitude.

Main Results:

A significant spatial-numerical association was observed.
Small numbers were consistently associated with close responses.
Large numbers were consistently associated with far responses, irrespective of movement direction.

Conclusions:

The findings challenge the direct mapping account of the SNARC effect.
Results support theories proposing an intermediate categorization step for number processing.
The study highlights the robustness of spatial-numerical associations across different response modalities.