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

Authors
  • Huber, S
  • Mann, A
  • Nuerk, H-C
  • Moeller, K
Type
Published Article
Journal
Psychological research
Publication Date
Jul 01, 2014
Volume
78
Issue
4
Pages
539–548
Identifiers
DOI: 10.1007/s00426-013-0504-x
PMID: 23877614
Source
Medline
License
Unknown

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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