Serial position effects in graphemic buffer impairment: An insight into components of orthographic working memory.
Cogn Neuropsychol
; 38(2): 153-177, 2021.
Article
en En
| MEDLINE
| ID: mdl-33886410
ABSTRACT
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.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Escritura
/
Agrafia
/
Memoria a Corto Plazo
Límite:
Aged
/
Humans
/
Male
Idioma:
En
Revista:
Cogn Neuropsychol
Asunto de la revista:
NEUROLOGIA
/
PSICOLOGIA
Año:
2021
Tipo del documento:
Article
País de afiliación:
Australia