Kristina Moll|Silke M. Göbel|Margaret J. Snowling
Basic number processing in children with specific learning disorders: Comorbidity of reading and mathematics disorders
University of York
well hallmark mathematics disorders deficits number processing also reported individuals reading disorders aim present study investigate separately components numerical processing affected reading mathematical disorders within framework triple code model children reading disorders rd mathematics disorders md comorbid deficits rd md typically developing children td tested verbal visualverbal nonverbal number tasks expected children md impaired across broad range numerical tasks contrast children rd impaired visualverbal number tasks showed ageappropriate performance nonverbal number skills suggesting impairments domain specific related reading difficulties comorbid group showed additive profile impairments two singledeficit groups performance speeded verbal number tasks related rapid automatized naming measure visualverbal access rd md group results indicate deficits number skills due different underlying cognitive deficits children rd compared children md phonological deficit rd deficit processing numerosities md