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09-04-2018 | Original Article

Time dependency of the SNARC effect for different number formats: evidence from saccadic responses

Auteurs: Alexandra Pressigout, Agnès Charvillat, Karima Mersad, Karine Doré-Mazars

Gepubliceerd in: Psychological Research | Uitgave 7/2019

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Abstract

In line with the suggestion that the strength of the spatial numerical association of response codes (SNARC) effect was time dependent, the aim of the present study was to assess whether the association strength depends on the processing time of numerical quantity and/or of the time to initiate responses. More specifically, we examined whether and how the SNARC effect could be modulated by number format and effector type. Experiment 1 compared the effect induced by Arabic numbers and number words on the basis of saccadic responses in a parity judgment task. Indeed, previous studies have shown that Arabic numbers lead to faster processing than number words. The results replicated the SNARC effect with Arabic numbers, but not with number words. Experiment 2 was similar to Experiment 1, but this time manual responses (i.e., responses far slower than saccadic ones) were recorded. A strong SNARC effect was observed for both number formats. Further analyses revealed a correlation between mean individual response times and the strength of the SNARC effect. We proposed that the initiation times for saccadic responses may be too short for the SNARC effect to appear, in particular with the written number format for which activation of magnitude takes time. We conclude in terms of time variations resulting from processing specificities related with number format, effector type and also individual reaction and processing speed.
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Metagegevens
Titel
Time dependency of the SNARC effect for different number formats: evidence from saccadic responses
Auteurs
Alexandra Pressigout
Agnès Charvillat
Karima Mersad
Karine Doré-Mazars
Publicatiedatum
09-04-2018
Uitgeverij
Springer Berlin Heidelberg
Gepubliceerd in
Psychological Research / Uitgave 7/2019
Print ISSN: 0340-0727
Elektronisch ISSN: 1430-2772
DOI
https://doi.org/10.1007/s00426-018-1010-y