Differential Hemispheric Activation in Good and Poor Readers

Abstract

Good and poor readers were found to differ on a cognitive style variable based on the differential use of one hemisphere over the other. While 20 good readers were equally divided (9 to 11) between right and left hemisphere activators, 17 of the 20 poor readers were right activators. The finding of no difference between the groups on a lateralized discriminative reaction time task when integrated with previous research led to the conclusion that some types of dyslexia result from a deficit in visual to auditory recoding.