Asynchrony of visual-orthographic and auditory-phonological word recognition processes: An underlying factor in dyslexia

    Research output: Contribution to journalArticlepeer-review

    Abstract

    This study investigated whether asynchrony of speed of processing (SOP) between visual-orthographic and auditory-phonological modalities can account for word recognition deficits among dyslexic readers. SOP among elementary school dyslexic readers was compared to that of chronologically age-matched normal readers. SOP was assessed using nonlinguistic and linguistic auditory and visual low-level tasks and higher-level orthographic and phonological tasks. Behavioral and electrophysiological (ERP) measures of SOP were obtained. Data indicated that dyslexic readers were significantly slower than control readers in most of the experimental tasks. Moreover, dyslexies revealed a systematic SOP gap between the auditory-phonological and the visual-orthographic modalities. This gap was found in both P200 and P300 latencies, and explained most of the variance in word recognition. A theory is proposed suggesting that asynchrony between the processing rates of the visual and the auditory modalities may be an underlying cause of dyslexia.

    Original languageEnglish
    Pages (from-to)15-42
    Number of pages28
    JournalReading and Writing
    Volume15
    Issue number1-2
    DOIs
    StatePublished - 2002

    Keywords

    • Asynchrony
    • Auditory
    • Brain activity
    • Dyslexia
    • Electrophysiology
    • ERP
    • Modalities
    • Orthography
    • Phonology
    • Reading
    • Speed of processing
    • Timing
    • Visual

    ASJC Scopus subject areas

    • Neuropsychology and Physiological Psychology
    • Education
    • Linguistics and Language
    • Speech and Hearing

    Fingerprint

    Dive into the research topics of 'Asynchrony of visual-orthographic and auditory-phonological word recognition processes: An underlying factor in dyslexia'. Together they form a unique fingerprint.

    Cite this