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Lexical Decision Task for Studying Written Word Recognition in Adults with and without Dementia or Mild Cognitive Impairment
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Local perception impairs the lexical reading route.

Sandro Franceschini1, Sara Bertoni2, Giovanna Puccio2

  • 1Developmental and Cognitive Neuroscience Lab, Department of General Psychology, University of Padua, Via Venezia 8, 35131, Padua, Italy. sandro.franceschini@unipd.it.

Psychological Research
|April 3, 2020
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Summary
This summary is machine-generated.

Atypical local perception, common in pre-readers with future reading difficulties, slows phonological access to irregular words in adults. This suggests local processing impacts lexical reading routes.

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Area of Science:

  • Cognitive psychology
  • Neuroscience
  • Reading science

Background:

  • Human visual perception follows a global-to-local hierarchy.
  • Impaired global-to-local processing in pre-readers predicts future reading difficulties.
  • Understanding how local perception affects reading in adults is crucial.

Purpose of the Study:

  • To investigate the impact of transient local perceptual priming on reading processes in typical adult readers.
  • To examine the effects on both lexical (irregular/regular words) and sublexical (pseudowords) reading routes.

Main Methods:

  • Utilized Global and Local Navon tasks to induce perceptual priming.
  • Administered a reading-aloud task following priming.
  • Compared reading times for irregular words, regular words, and pseudowords.

Main Results:

  • Local priming, compared to global priming, significantly slowed phonological access to irregular words.
  • No significant effect of local priming was observed on pseudoword reading.
  • Findings indicate local priming specifically impairs the rapid processing of letter strings in lexical reading.

Conclusions:

  • Transient local perceptual priming negatively affects lexical reading in typical adults.
  • This impairment is specific to the processing of irregular words, suggesting an impact on the lexical reading route.
  • The study highlights the importance of efficient local perception for fluent lexical access in reading.