Auditory Processing is a key skill in the tasks of reading, writing and spelling the visual notation of speech, text. Any Auditory Processing deficit or disorder can cause the dyslexic symptom.
This is a personal collection of research papers from PubMed
There are many Cognitive deficits which can cause the dyslexic symptom, which include Visual processing, Auditory Processing, and attention deficits. The method of support will vary according to the nature of the cognitive deficits causing the dyslexic symptom