This study was an investigation of several Arabic reading measures among dyslexics and normal Arabic readers across different ages (grades 3, 6, 9, and 12): the role of morphology, short vowelization (phonological and syntactic skills), spelling, reading isolated words, and reading comprehension. The results of the one-way ANOVAs indicated clear differences between the dyslexic readers and the normal readers on all reading measures. However, the stepwise regression analysis revealed consistent orthographic results: morphology (identification and/or production) and spelling were generally the most powerful predictors of both reading accuracy and reading comprehension among dyslexic and normal readers across these different age groups. The results are discussed in terms of the characteristics of the Arabic orthography and the heavy reliance of readers at all levels and ages on orthographic factors in reading.
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