The Double Deficit Hypothesis of dyslexia is one approach to classifying students with reading disabilities. The theory offers four distinct groups of readers: (a) average readers, (b) students with phonological deficits, (c) students with naming speed deficits, and (d) students with double deficits: those having both (b) and (c). This study…

A highly reproducible scale of difficulty of word identification tasks was identified for both good and poor readers: consonant-vowel combinations and short vowel words were learned first. Long vowel words, special rule words, and nonsense words were more difficult. Reading instruction should parallel this sequence since it follows learning…