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Processing multi-digit numbers: a translingual eye-tracking study.

Julia Bahnmueller1,2, Stefan Huber3, Hans-Christoph Nuerk3,4

  • 1Neurocognition Laboratory, Leibniz-Institut für Wissensmedien, Schleichstraße 6, 72076, Tübingen, Germany. j.bahnmueller@iwm-tuebingen.de.

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Summary
This summary is machine-generated.

Cognitive processes for three-digit number comparison differ between English and German speakers. Language-specific reading behaviors influence whether number processing is parallel or sequential, impacting cognitive strategies.

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Area of Science:

  • Cognitive Psychology
  • Psycholinguistics
  • Numerical Cognition

Background:

  • Understanding how humans process multi-digit numbers is crucial for cognitive science.
  • Previous research suggests language influences numerical cognition, but specific mechanisms for three-digit numbers remain unclear.

Purpose of the Study:

  • To investigate cognitive processes in three-digit number comparison.
  • To determine if parallel or sequential processing strategies are employed.
  • To examine the influence of number word inversion and native language reading behavior on these strategies.

Main Methods:

  • Adult participants from English- and German-speaking backgrounds completed a three-digit number comparison task.
  • Eye-fixation behavior was recorded to analyze processing strategies.
  • Compatibility effects (hundred-decade, hundred-unit) were analyzed.

Main Results:

  • Both English and German speakers showed parallel processing, evidenced by hundred-decade and hundred-unit compatibility effects.
  • English speakers showed no evidence of sequential processing.
  • Approximately half of German speakers exhibited sequential processing, indicated by inverse hundred-decade effects and longer fixation on the hundred digit.

Conclusions:

  • Cognitive strategies for processing three-digit numbers vary between language groups.
  • German orthography and reading behavior may promote sequential processing in numerical cognition.
  • Number word inversion alone does not fully explain language-specific differences in three-digit number processing.