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Cognitive control in number magnitude processing: evidence from eye-tracking

Authors
  • Huber, S.1
  • Mann, A.2
  • Nuerk, H.-C.2, 1
  • Moeller, K.1
  • 1 Knowledge Media Research Center, Schleichstrasse 6, Tuebingen, 72076, Germany , Tuebingen (Germany)
  • 2 Eberhard Karls University, Department of Psychology, Tuebingen, Germany , Tuebingen (Germany)
Type
Published Article
Journal
Psychological research
Publication Date
Jul 23, 2013
Volume
78
Issue
4
Pages
539–548
Identifiers
DOI: 10.1007/s00426-013-0504-x
Source
Springer Nature
Keywords
License
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Abstract

The unit-decade compatibility effect describes longer response times and higher error rates for incompatible (e.g., 37_52) than compatible (e.g., 42_57) number comparisons. Recent research indicated that the effect depends on the percentage of same-decade filler items. In the present study, we further examined this relationship by recording participants’ eye-fixation behaviour. In four conditions, participants had to compare item sets with different filler item types (i.e., same-decade and same-unit filler items) and different numbers of same-decade filler items (i.e., 25, 50, and 75 %). We found a weaker unit-decade compatibility effect with most fixations on tens in the condition with same-unit filler items. Moreover, the compatibility effect increased with the percentage of same-decade filler items which was accompanied by less fixations on tens and more fixations on units. Thus, our study provides first eye-tracking evidence for the influence of cognitive control in number processing.

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