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AutorenSteinbrink, Claudia; Klatte, Maria; Lachmann, Thomas
TitelPhonological, temporal and spectral processing in vowel length discrimination is impaired in German primary school children with developmental dyslexia.
QuelleIn: Research in developmental disabilities, 35 (2014) 11, S. 3034-3045
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Spracheenglisch
Dokumenttypgedruckt; online; Zeitschriftenaufsatz
ISSN0891-4222; 1873-3379
DOI10.1016/j.ridd.2014.07.049
SchlagwörterDyslexie; Phonologie; Auditive Stimulation; Grundschule; Schüler; Schuljahr 03; Schuljahr 04; Vokal; Deutschland; Lesekompetenz;
AbstractIt is still unclear whether phonological processing deficits are the underlying cause of developmental dyslexia, or rather a consequence of basic auditory processing impairments. To avoid methodological confounds, in the current study the same task and stimuli of comparable complexity were used to investigate both phonological and basic auditory (temporal and spectral) processing in dyslexia. German dyslexic children (Grades 3 and 4) were compared to age- and grade-matched controls in a vowel length discrimination task with three experimental conditions: In a phonological condition, natural vowels were used, differing both with respect to temporal and spectral information (in German, vowel length is phonemic, and vowel length differences are characterized by both temporal and spectral information). In a temporal condition, spectral information differentiating between the two vowels of a pair was eliminated, whereas in a spectral condition, temporal differences were removed. As performance measure, the sensitivity index d′ was computed. At the group level, dyslexic children’s performance was inferior to that of controls for phonological as well as temporal and spectral vowel length discrimination. At an individual level, nearly half of the dyslexic sample was characterized by deficits in all three conditions, but there were also some children showing no deficits at all. These results reveal on the one hand that phonological processing deficits in dyslexia may stem from impairments in processing temporal and spectral information in the speech signal. On the other hand they indicate, however, that not all dyslexic children might be characterized by phonological or auditory processing deficits. (Orig.).
Erfasst vonDIPF | Leibniz-Institut für Bildungsforschung und Bildungsinformation, Frankfurt am Main
UpdateNeueintrag 2018-09
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