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Cascading activation from lexical processing to letter-level processing in written word production.

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Title: Cascading activation from lexical processing to letter-level processing in written word production.
Authors: Buchwald, Adam (AUTHOR), Falconer, Carolyn (AUTHOR)
Source: Cognitive Neuropsychology. Oct-Dec2014, Vol. 31 Issue 7/8, p606-621. 16p.
Subjects: Vocabulary, Phoneme (Linguistics), Semantics, Agraphia, Orthography & spelling, Language disorders
Abstract: Descriptions of language production have identified processes involved in producing language and the presence and type of interaction among those processes. In the case of spoken language production, consensus has emerged that there is interaction among lexical selection processes and phoneme-level processing. This issue has received less attention in written language production. In this paper, we present a novel analysis of the writing-to-dictation performance of an individual with acquired dysgraphia revealing cascading activation from lexical processing to letter-level processing. The individual produced frequent lexical–semantic errors (e.g.,chipmunk → SQUIRREL) as well as letter errors (e.g.,inhibit → INBHITI) and had a profile consistent with impairment affecting both lexical processing and letter-level processing. The presence of cascading activation is suggested by lower letter accuracy on words that are more weakly activated during lexical selection than on those that are more strongly activated. We operationalize weakly activated lexemes as those lexemes that are produced as lexical–semantic errors (e.g.,lethalindeadly → LETAHL) compared to strongly activated lexemes where the intended target word (e.g.,lethal) is the lexeme selected for production. [ABSTRACT FROM AUTHOR]
Copyright of Cognitive Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
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  Data: Cascading activation from lexical processing to letter-level processing in written word production.
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  Data: <searchLink fieldCode="AR" term="%22Buchwald%2C+Adam%22">Buchwald, Adam</searchLink> (AUTHOR)<br /><searchLink fieldCode="AR" term="%22Falconer%2C+Carolyn%22">Falconer, Carolyn</searchLink> (AUTHOR)
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  Data: <searchLink fieldCode="JN" term="%22Cognitive+Neuropsychology%22">Cognitive Neuropsychology</searchLink>. Oct-Dec2014, Vol. 31 Issue 7/8, p606-621. 16p.
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  Data: Descriptions of language production have identified processes involved in producing language and the presence and type of interaction among those processes. In the case of spoken language production, consensus has emerged that there is interaction among lexical selection processes and phoneme-level processing. This issue has received less attention in written language production. In this paper, we present a novel analysis of the writing-to-dictation performance of an individual with acquired dysgraphia revealing cascading activation from lexical processing to letter-level processing. The individual produced frequent lexical–semantic errors (e.g.,chipmunk → SQUIRREL) as well as letter errors (e.g.,inhibit → INBHITI) and had a profile consistent with impairment affecting both lexical processing and letter-level processing. The presence of cascading activation is suggested by lower letter accuracy on words that are more weakly activated during lexical selection than on those that are more strongly activated. We operationalize weakly activated lexemes as those lexemes that are produced as lexical–semantic errors (e.g.,lethalindeadly → LETAHL) compared to strongly activated lexemes where the intended target word (e.g.,lethal) is the lexeme selected for production. [ABSTRACT FROM AUTHOR]
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  Data: <i>Copyright of Cognitive Neuropsychology is the property of Taylor & Francis Ltd and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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        Value: 10.1080/02643294.2014.951609
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              Text: Oct-Dec2014
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