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The influence of semantic processing and response latency on the SNARC effect
Daniele Didino1, Christina Breil2, André Knops3
1Department of Psychology, Faculty of Life Sciences, Humboldt-Universität zu Berlin, Berlin, Germany.
Acta Psychologica
|April 21, 2019
Summary
The Spatial-Numerical Association of Response Code (SNARC) effect is not solely based on semantic number processing. Response speed, not task type, influenced the SNARC effect, challenging the mental number line account.
Area of Science:
- Cognitive Psychology
- Numerical Cognition
- Experimental Psychology
Background:
- The Spatial-Numerical Association of Response Code (SNARC) effect demonstrates a link between number magnitude and spatial response location.
- The traditional mental number line (MNL) account posits that this effect arises from the inherent spatial representation of numbers and is modulated by semantic processing demands.
Purpose of the Study:
- To investigate whether the SNARC effect is modulated by the degree of semantic processing required by a task.
- To test the validity of the MNL account against alternative explanations.
Main Methods:
- Participants completed four tasks: two involving semantic number processing (magnitude classification, parity judgment) and two involving non-semantic processing (phoneme detection, color judgment).
- The SNARC effect was measured across all tasks.
Main Results:
- The SNARC effect was not modulated by the amount of semantic processing across the tasks.
- Response latency, rather than semantic task demands, significantly influenced the SNARC effect.
- Findings contradict the predictions of the MNL account.
Conclusions:
- The results challenge the traditional MNL account of the SNARC effect.
- Evidence supports alternative models, such as the dual-route model or working memory account, in explaining the SNARC effect.
- The study highlights the role of response-related factors in numerical cognition.
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