Process Dissociation of Sight Vocabulary and Phonetic Decoding in Reading: A New Perspective on Surface and Phonological Dyslexias

Autor/inn/en	McDougall, Patricia; Borowsky, Ron; MacKinnon, G. E.; Hymel, Shelley
Titel	Process Dissociation of Sight Vocabulary and Phonetic Decoding in Reading: A New Perspective on Surface and Phonological Dyslexias
Quelle	In: Brain and Language, 92 (2005) 2, S.185-203 (19 Seiten) PDF als Volltext Verfügbarkeit
Sprache	englisch
Dokumenttyp	gedruckt; online; Zeitschriftenaufsatz
ISSN	0093-934X
DOI	10.1016/j.bandl.2004.06.003
Schlagwörter	Dyslexia; Decoding (Reading); Phonetics; Word Recognition; Sight Vocabulary; Evaluation Methods; Cognitive Measurement + Suchen Sie Ihr Suchwort? Dyslexics; Legasthenie; Lese-Rechtschreib-Schwäche; Dekodierung; Phonetik; Fonetik; Worterkennung
Abstract	Recent research on developmental dyslexia has suggested a phonological core deficit hypothesis (e.g., Manis, Seidenberg, Doi, McBride-Chang, & Peterson, 1996; Stanovich, Siegel, & Gottardo, 1997) whereby pure cases of developmental phonological dyslexia (dysfunctional phonetic decoding processing but normal sight vocabulary processing) can exist, but pure cases of developmental surface dyslexia (dysfunctional sight vocabulary processing but normal phonetic decoding processing) should not. By applying Jacoby's (1991) and Lindsay and Jacoby's (1994) process dissociation procedure to the reading of regular and exception words, we present a method that serves to estimate readers' reliance on sight vocabulary and phonetic decoding during real word recognition. These reliance estimates are then used in Castles and Coltheart's (1993) regression-based approach to identify normal readers and developmental dyslexics. This new method: (1) allows one to explore normal reading acquisition and both the delay and deviance accounts of developmental dyslexia, (2) provides an alternative to matching dyslexics to both chronological-age and reading-age control groups, and (3) uses only real words. We present evidence that pure cases of developmental surface dyslexia can be obtained with both Castles and Coltheart's measure as well as our own, and that developmental surface dyslexia is not simply a delayed reading deficit. The theoretical importance and utility of estimates of reliance on sight vocabulary and phonetic decoding is discussed. (Author).
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Erfasst von	ERIC (Education Resources Information Center), Washington, DC
Update	2017/4/10