Dislexias y procesamiento cognitivo

Abstract

A cognitive model that explains the dyslexias is described. This model has two stages and three levels. The stages are decoding of letters and  words, and decoding-encoding of meaning. The three levels are: Surface or receptive leve/; Superior or central leve/; Intermediate or transformation leve/. This cognitive model describes dyslexias as deficiencies in the intermediate processing, in which the graphícal signs arefirst transformed in phonologica/ sequencies and then in verbal meaning. Principal intermediate processes concerned with dyslexias are short term verbal working memory, phonological processing and orthographic visual processing. Deficiencies in these three processes play a causality in dyslexias. They can be used as a way for rehabilitation of dyslexics as well.