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Related Experiment Video

Updated: Jun 7, 2026

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

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

Published on: June 25, 2019

Lexical influences in graphemic buffer disorder.

Karen Sage¹, Andrew W Ellis

¹University of Manchester, UK.

Cognitive Neuropsychology

|November 2, 2010

Summary

This summary is machine-generated.

Patient BH experienced graphemic buffer disorder, impacting spelling accuracy. Lexical factors like word frequency and imageability, not just length, influenced her spelling performance.

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Area of Science:

Neuroscience
Cognitive Psychology
Linguistics

Background:

Graphemic buffer disorder is characterized by specific spelling errors.
Previous research often focused on letter length as a primary factor.

Purpose of the Study:

To investigate the spelling patterns of a patient with graphemic buffer disorder.
To explore the influence of lexical factors on spelling accuracy in graphemic buffer disorder.

Main Methods:

Case study of patient BH with detailed analysis of spelling errors.
Controlled for factors such as word imageability, age of acquisition, frequency, and number of orthographic neighbors.

Main Results:

Patient BH exhibited characteristic graphemic buffer disorder features.
Spelling accuracy was influenced by lexical properties (imageability, frequency, age of acquisition, neighbor N), particularly when controlling for word length.
The effect of word length on spelling was reduced when these lexical factors were accounted for.

Conclusions:

Lexical factors exert significant top-down influences on the graphemic buffer.
These findings suggest that lexical effects on spelling may be more prevalent in graphemic buffer disorder than previously recognized.