2 TYPES OF PHONOLOGICAL ALEXIA

It is hypothesized, on the basis of a lexical model of reading, that t here are two different underlying causes of phonological alexia. It is predicted that these two types of phonological alexia will be accompa nied by different sets of symptoms. Published cases of phonological al exia are examined for evidence in support of these predictions. Two di stinct groups of phonological alexic patients are observed. These resu lts support the notion of two types of phonological alexia. The failur e to find any phonological alexic patients who do not fall into one of these two categories provides evidence against non-lexical reading mo dels.