This study assessed whether two well known effects associated with cognitive control, conflict adaptation (the Gratton effect) and conflict context (proportion congruent effects), reflect a single common or separate control systems. To test this we examined if these two effects generalized from one kind of conflict to another by using a…

Studied 51 dyslexic children, 51 age-matched normal readers, and 27 younger normal readers to explore whether there are different subtypes of developmental dyslexia, and whether developmental dyslexia represents delay or deviance. Found evidence to support two subtypes: surface and phonological dyslexia. (DR)