The importance of magnitude information in numerical processing: Evidence from the SNARC effect

Abstract

Models of the numerical cognitive system differ in the importance they attach to magnitude information in numerical processing. In this paper, the necessity of addressing a central semantic number system in arabic number processing is evaluated by looking at the SNARC-effect. This effect has been interpreted as an indication of access to the semantic system. In Experiment 1, we replicated the effect in a parity judgement task. In Experiment 2, we extended the SNARC-effect to a phoneme monitoring task, showing that magnitude information was accessed during arabic-to-verbal transcoding. We conclude, therefore, that number magnitude plays a more important role than is generally accepted.