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Updated: Jul 14, 2026
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Assessing Dyslexia at Six Year of Age
Published on: May 1, 2020
Deficient morphological processing in adults with developmental dyslexia: another barrier to efficient word
1School of Education, Haddad Center for Research in Dyslexia, Bar Ilan University, Israel. rschiff@mail.biu.ac.il
Dyslexia (Chichester, England)
|June 15, 2007
Summary
Adults with dyslexia struggle with word recognition due to difficulties in morphological processing. Unlike typical readers, dyslexic individuals do not show morphological priming, impacting their reading abilities.
Area of Science:
- Linguistics
- Cognitive Neuroscience
- Developmental Psychology
Background:
- Previous research on dyslexia primarily focused on phonological processing deficits.
- The role of morphological processing in dyslexia remains less understood.
Purpose of the Study:
- To investigate morphological processing in adult Hebrew readers with dyslexia.
- To determine if individuals with dyslexia extract and represent morphemic units differently from typical readers.
Main Methods:
- Utilized a word fragment completion task with a priming paradigm.
- Measured morphological priming and compared it to repetition priming effects.
- Classified dyslexic participants into subtypes based on phonological and orthographic decoding skills.
Main Results:
- Typical repetition priming was observed in normal readers and the overall dyslexic group.
- Repetition priming was significant only in the phonological dyslexia subgroup.
- Normal readers exhibited strong morphological priming, while dyslexic readers showed no significant morphological priming across groups or subgroups.
Conclusions:
- Dyslexia is associated with significant deficits in morphological processing.
- Difficulties in morphological processing represent an additional factor contributing to word recognition challenges in individuals with dyslexia.
- Findings suggest that interventions for dyslexia may benefit from addressing morphological awareness and processing.
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