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Bisections in two languages: when number processing, spatial representation, and habitual reading direction interact.

Seta Kazandjian1, Céline Cavézian, Ari Z Zivotofsky

  • 1ERT TREAT Vision, Laboratoire de Psychologie et NeuroCognition, UMR 5105 CNRS-Université Pierre Mendès France, Grenoble, France. seta.kazandjian@upmf-grenoble.fr

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Summary
This summary is machine-generated.

Reading direction influences spatial biases in number processing. Native Hebrew readers showed rightward biases, while English readers did not, suggesting cultural factors shape numerical-spatial representations.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Linguistics

Background:

  • Spatial biases are linked to the mental number line, affecting number processing.
  • Previous research shows biases even with number words, not just digits.
  • Reading direction is a potential cultural factor influencing spatial cognition.

Purpose of the Study:

  • To investigate if the left-to-right mental number line persists across different reading directions.
  • To compare spatial biases in number processing between left-to-right and right-to-left readers.
  • To determine the impact of reading direction and language on numerical-spatial associations.

Main Methods:

  • Comparison of monolingual left-to-right English readers with bidirectional English-Hebrew readers.
  • Presentation of Arabic numeral strings and number word strings (e.g., THREE, EIGHT) in English and Hebrew.
  • Analysis of spatial biases in bisecting number strings based on habitual reading direction.

Main Results:

  • Native Hebrew readers exhibited significant rightward spatial biases, irrespective of English proficiency.
  • Native English readers (bidirectional and monodirectional) did not display significant left or rightward biases.
  • Spatial bias was directly related to habitual reading direction, not numerical magnitude.

Conclusions:

  • Habitual reading direction significantly influences spatial biases in number representation.
  • Cultural factors, particularly reading direction, play a crucial role in shaping numerical-spatial associations.
  • The mental number line's spatial mapping is adaptable and influenced by linguistic and cultural experiences.