NDLI: Auditory frequency discrimination in adult developmental dyslexics

Content Provider	Springer Nature Link
Author	France, S. J. Rosner, B. S. Hansen, P. C. Calvin, C. Talcott, J. B. Richardson, A. J. Stein, J. F.
Copyright Year	2002
Abstract	Developmental dyslexics reportedly discriminate auditory frequency poorly. A recent study found no such deficit. Unlike its predecessors, however, it employed multiple exposures per trial to the standard stimulus. To investigate whether this affects frequency discrimination in dyslexics, a traditional twointerval same-different paradigm (2I_1A_X) and a variant with six A-stimuli per trial (2I_6A_X) were used here. Frequency varied around 500 Hz; interstimulus interval (ISI) ranged between 0 and 1,000 msec. Under 2I_1A_X, dyslexics always had larger just noticeable differences (JNDs) than did controls. Dyslexic and control JNDs were equal at shorter ISIs under 2I_6A_X, but dyslexics became worse than controls at longer ISIs. Signal detection analysis suggests that both sensory variance and trace variance are larger in dyslexics than in controls.
Starting Page	169
Ending Page	179
Page Count	11
File Format	PDF
ISSN	00315117
Journal	Perception & Psychophysics
Volume Number	64
Issue Number	2
e-ISSN	15325962
Language	English
Publisher	Springer-Verlag
Publisher Date	2002-01-01
Publisher Place	New York
Access Restriction	Subscribed
Subject Keyword	Cognitive Psychology
Content Type	Text
Resource Type	Article
Subject	Experimental and Cognitive Psychology Sensory Systems Psychology

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Auditory frequency discrimination in adult developmental dyslexics