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Related Experiment Video

Updated: May 31, 2026

Training Synesthetic Letter-color Associations by Reading in Color
10:27

Training Synesthetic Letter-color Associations by Reading in Color

Published on: February 20, 2014

On coding non-contiguous letter combinations.

Frédéric Dandurand1, Jonathan Grainger, Jon Andoni Duñabeitia

  • 1Department of Psychology, Université de Montréal Montréal, QC, Canada.

Frontiers in Psychology
|July 8, 2011
PubMed
Summary
This summary is machine-generated.

Readers identify words by mapping visual features to letters. Optimal word recognition involves learning specific contiguous and non-contiguous letter combinations that best predict word identity, balancing information and efficiency.

Keywords:
bigramsinformationoptimizationvisual word recognition

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Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
06:48

Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment

Published on: June 25, 2019

Area of Science:

  • Cognitive Psychology
  • Computational Linguistics
  • Neuroscience

Background:

  • Printed word identification is a complex cognitive process.
  • Theories suggest parallel processing of visual features and letter identities.
  • An intermediate coding level likely exists between letters and whole words.

Purpose of the Study:

  • To analyze the optimal information mapping from location-specific to location-invariant lexical codes.
  • To investigate the nature of intermediate coding for letter combinations.
  • To understand how readers efficiently identify words.

Main Methods:

  • Information-theoretic analysis of letter sequence coding.
  • Modeling optimal data compression and information retention.
  • Analysis of orthographic priming experiments.

Main Results:

  • Non-contiguous letter sequences can convey more information than contiguous ones with less precise coding.
  • Within-word ranking of conditional probabilities better predicts human performance than average probabilities.
  • Optimality in coding involves minimizing resources and maximizing information about word identity.

Conclusions:

  • Readers learn to utilize specific contiguous and non-contiguous letter combinations as cues for word recognition.
  • Optimal orthographic coding balances information content with representational efficiency.
  • This perspective refines models of visual word recognition and reading processes.