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Related Experiment Videos

The effect of orientation on number word processing.

Roi Cohen Kadosh1, Avishai Henik, Orly Rubinsten

  • 1Department of Behavioral Sciences, Zlotowski Center for Neuroscience, Ben-Gurion University of the Negev, Beer-Sheva, Israel. roico@bgu.ac.il

Acta Psychologica
|June 20, 2006
PubMed
Summary

The orientation of number words significantly impacts numerical processing. Horizontal presentation aligns with Arabic number processing, suggesting distinct visual-spatial and verbal numerical codes.

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Numerical Cognition

Background:

  • Previous research suggested distinct processing for Arabic numbers and number words.
  • A prior study confounded notation with stimulus orientation, limiting conclusions.

Purpose of the Study:

  • To investigate the effect of number word orientation on numerical processing.
  • To clarify whether notation or orientation drives differences in processing Arabic numbers and number words.

Main Methods:

  • Participants processed number words presented horizontally and vertically.
  • The size congruity effect and distance effect were measured for both orientations.

Main Results:

  • Number word orientation modulated both the size congruity and distance effects.

Related Experiment Videos

  • Horizontal orientation yielded results similar to Arabic number processing.
  • Vertical orientation produced distinct processing patterns compared to Arabic numbers.

    • Conclusions:

    • The cognitive system utilizes separate mechanisms for numerical processing.
    • One mechanism relies on a visual-spatial code, while the other uses a verbal code.
    • Stimulus orientation is a critical factor in understanding numerical cognition differences.