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Roman digit naming: evidence for a semantic route
Wouter Duyck1, Evelyne Lagrou, Wim Gevers
1Department of Experimental Psychology, Ghent University, Ghent, Belgium. wouter.duyck@UGent.be
Experimental Psychology
|May 1, 2008
Summary
The study reveals that understanding Roman digits requires accessing their meaning (semantic route). This semantic processing is mandatory, even when numbers are presented visually, impacting how quickly we process them.
Area of Science:
- Cognitive Psychology
- Neuroscience of Language
- Numerical Cognition
Background:
- Number naming involves semantic and phonological routes, influenced by language, format, and task.
- Previous research explored these routes for Arabic and verbal number formats.
- The processing of Roman digits, a distinct magnitude representation, remained less understood.
Purpose of the Study:
- To investigate the role of the semantic route in processing Roman digits.
- To determine if semantic access is mandatory for Roman digit comprehension.
- To explore implications for numerical cognition models and bilingual translation.
Main Methods:
- Employed an interference paradigm using Roman target digits and Arabic digit distractors.
- Assessed processing speed in both a naming task and a parity judgment task.
- Analyzed the influence of numerical distance between target and distractor digits.
Main Results:
- Processing of Roman digits was significantly influenced by Arabic digit distractors.
- Faster processing occurred when target and distractor digits represented the same magnitude.
- Increased processing time was observed as the numerical distance between digits grew.
Conclusions:
- Semantic access is a mandatory component of processing Roman digits.
- This finding supports the universality of semantic processing across different numerical formats.
- Results inform models of number cognition and bilingual word translation.
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