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Training Synesthetic Letter-color Associations by Reading in Color
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Readers encode absolute letter positions.

Joshua Snell1, Joelle Simon1

  • 1Vrije Universiteit Amsterdam, the Netherlands.

Cognition
|September 18, 2024
PubMed
Summary
This summary is machine-generated.

The reading brain uses absolute letter positions, not relative ones, to recognize words. This finding clarifies ongoing debates in lexical access research.

Keywords:
Letter position codingOrthographic processingReadingVisual word recognition

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Area of Science:

  • Cognitive Psychology
  • Neuroscience
  • Computational Linguistics

Background:

  • The reading brain's use of letter position information (absolute vs. relative) is a long-standing debate.
  • Previous flanker lexical decision tasks yielded conflicting results regarding letter position coding.

Purpose of the Study:

  • To resolve conflicting evidence on whether the reading brain uses absolute or relative letter position information for lexical access.
  • To investigate the influence of flanker relatedness and position switching across various target and flanker lengths.

Main Methods:

  • Conducted a flanker lexical decision task experiment.
  • Systematically varied target and flanker lengths.
  • Analyzed flanker relatedness and position switching effects.

Main Results:

  • Flanker relatedness effects significantly reduced when flanker positions were switched.
  • This reduction was consistent across different target and flanker lengths.
  • Results challenge the notion of relative letter position coding in lexical access.

Conclusions:

  • Lexical access is primarily driven by absolute letter position information.
  • The findings are consistent with predictions from the PONG model (Snell, 2024b).
  • This study provides unambiguous evidence for absolute letter position coding in word recognition.