This paper investigates the relevant studies of subtypes of dyslexia in alphabeticlanguage countries and Chinese-language countries based on six mainstream hypotheses of dyslexia. There are six suggestions for this issue to improve the relevant studies in the future: First, types of sample in the relevant studies are different; second, the position of typical students in the relevant studies is debatable; third, the theories and measurements of subtyping dyslexia are too narrow; fourth, the validity of subtyping dyslexia is not enough; fifth, the effect of age of subtyping dyslexia is not clear; finally, the instructions after subtyping dyslexia is not properly addressed. |