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This study investigated the nature of graphemic buffer functioning and impairment, through analysis of the spelling impairment shown by GEC, a man with acquired dysgraphia and clear characteristics of graphemic buffer impairment. We discuss GEC’s error patterns in relation to different processes of orthographic working memory. This is the first study to show the contribution of these processes in one individual through performance on different spelling tasks. GEC’s spelling errors in writing to dictation showed a linear serial position effect, including deletions of final letters. These “fragment errors” can be explained as the result of information rapidly decaying from the buffer (reduced temporal stability). However, in tasks that reduced working memory demands, GEC showed a different error distribution that may indicate impairment to a different buffer process (reduced representational distinctiveness). We argue that different error patterns can be a reflection of subcomponents of orthographic working memory that can be impaired separately.
|Number of pages||25|
|Early online date||21 Apr 2021|
|Publication status||Published - 23 Apr 2021|
- graphemic buffer
- orthographic working memory
- fragment errors
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Developing better treatments for language disorders (ARC)
Nickels, L., MQRES, M. & MQRES 3 (International), M. 3.
31/12/12 → …