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A model for two-digit number processing based on a joint Garner and system factorial technology analysis.

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Cognitive research reveals how adults process two-digit numbers. Using Garner

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Area of Science:

  • Cognitive Psychology
  • Human Information Processing
  • Numerical Cognition

Background:

  • Number processing is integral to daily life and a key area in cognitive research.
  • Adults easily perceive the magnitude of two-digit numbers and their component digits, but the relationship between these is unclear.

Purpose of the Study:

  • To investigate the cognitive mechanisms underlying the processing of two-digit numbers.
  • To elucidate the relationship between the processing of overall numerical magnitude and individual digit magnitudes.

Main Methods:

  • Utilized Garner's speeded classification paradigm (Experiment 1).
  • Employed system factorial technology (Experiment 2).
  • Applied both methods to two-digit number stimuli.

Main Results:

  • Identified distinct phases of independent and coactive processing in two-digit number comprehension.
  • Established a clear time-course for these processing phases.
  • Data supported a novel cognitive model.

Conclusions:

  • The interactive race coactive model effectively explains the complex processing of two-digit numbers.
  • This model integrates findings on independent and coactive processing stages.
  • Provides a framework for understanding numerical cognition in adults.