Reduced perceptual processing speed and atypical attentional weight at the cores of visual simultaneous processing deficits in Chinese children with developmental dyslexia: a parameter-based assessment of visual attention

Individuals with developmental dyslexia usually exhibit a problem in simultaneous processing of multiple visual elements. However, the relationship between impaired (VSP) and reading difficulty is still debated. These inconsistencies may be associated wide range participants’ age, variation orthographic depth background languages, complex subcomponents underlying VSP. The present study thus examined VSP capacity children language context Chinese (i.e., logographic writing system deep orthography) through trajectories method which age was considered as continuous variable. This multiple-element skill fractionated into four parameters (processing speed, short-term memory storage, attentional weight, irrelevant inhibition) within framework theory attention (TVA). Forty-seven fifty-three age-matched normal readers from primary schools were recruited to take combined TVA test using symbols non-verbal stimuli. Results showed that exhibited delayed pattern perceptual speed an atypical weight compared controls. Further mediation analyses triangular “TVA subcomponent-linguistic awareness-reading,” revealing possible roles these regarding reading. current findings suggested deficit stem impairments modulation specificity Chinese) on cognitive deficits dyslexia, have implications for diagnosis remediation dyslexia.