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Levels of morphological deficit: indications from inflectional regularity
1Department of Cognitive Science, Johns Hopkins University, Baltimore, MD 21218-2685, USA. badecker@jhu.edu
Brain and Language
|December 17, 1997
Summary
This study identifies a specific language impairment affecting morphosyntax, impacting both regular and irregular word inflections. The findings suggest a distinct deficit in morphological processing, not whole-word failures.
Area of Science:
- Linguistics
- Neurolinguistics
- Psycholinguistics
Background:
- Language impairments can stem from deficits in morphological processing or whole-word processing.
- Distinguishing between these requires understanding different levels of morphological structure, such as morphosyntax and morphophonology.
Observation:
- A single-case study investigated a patient with language impairment affecting word production.
- The patient exhibited difficulties with both regular and irregular inflected and derived words.
Findings:
- Evidence suggests a specific deficit in morphosyntactic representation or processing.
- This impairment affects both regular and irregular word forms.
- The observed pattern cannot be explained by a general whole-word processing deficit.
Implications:
- This case provides strong support for a distinct morphosyntactic processing module in language.
- Understanding specific deficits is crucial for accurate diagnosis and targeted therapeutic interventions in language disorders.
- The findings contribute to the broader understanding of how the brain represents and processes word structure.