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    The analysis of perseverations in acquired dysgraphia reveals the internal structure of orthographic representations

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    Author
    Fischer-Baum, Simon
    Rapp, Brenda
    Date
    2014
    Citation
    Fischer-Baum, Simon and Rapp, Brenda. "The analysis of perseverations in acquired dysgraphia reveals the internal structure of orthographic representations." Cognitive Neuropsychology, 31, no. 3 (2014) 237-265. http://dx.doi.org/10.1080/02643294.2014.880676.
    Published Version
    http://dx.doi.org/10.1080/02643294.2014.880676
    Abstract
    At a minimum, our long-term memory representations of word spellings consist of ordered strings of single letter identities. While letter identity and position must certainly be represented, it is by no means obvious that this is the only information that is included in orthographic representations, nor that representations necessarily have a one-dimensional “flat” structure. Evidence favours the alternative hypothesis that orthographic representations, much like phonological ones, are internally rich, complex multidimensional structures, though many questions remain regarding the precise nature of the internal complexity of orthographic representations. In this investigation, we test competing accounts of the internal structure of orthographic representations by analysing the perseveration errors produced by an individual with acquired dysgraphia, L.S.S. The analysis of perseveration errors provides a novel and powerful method for investigating the question of the independence of different representational components. The results provide clear support for the hypothesis that letter quantity and syllabic role information are associated with, but separable from, letter identity information. Furthermore, the results indicate that digraphs—letter pairs associated with a single phoneme (e.g., the SH in FISH)—are units of orthographic representation. These results contribute substantially to the further development of the multidimensional hypothesis, providing both new and converging evidence regarding the nature of the internal complexity of orthographic representations.
    Keyword
    perseveration; spelling; orthographic representation
    Type
    Journal article
    Citable link to this page
    http://hdl.handle.net/1911/80844
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    • Faculty Publications [2827]
    • Psychology Department Papers and Publications [90]

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    Managed by the Digital Scholarship Services at Fondren Library, Rice University
    Physical Address: 6100 Main Street, Houston, Texas 77005
    Mailing Address: MS-44, P.O.BOX 1892, Houston, Texas 77251-1892