Purpose: Of the three currently recognized variants of primary progressive aphasia, behavioral differentiation between the nonfluent/agrammatic (nfvPPA) and logopenic (lvPPA) variants is particularly difficult. The challenge includes uncertainty regarding diagnosis of apraxia of speech, which is subsumed within criteria for variant classification.…

A study examined the effects of overt phonologic impairment on the phonological awareness, verbal working memory, and letter knowledge of 29 children with phonologic impairment and 16 controls (ages 3-6). Children with phonologic impairment performed significantly worse on tasks of verbal working memory, phoneme segmentation, and letter…

A phoneme confusion matrix consisting of 1,620 spontaneous speech errors was analyzed. It is shown that there is no tendency for linguistically unmarked consonants to replace marked consonants and that sound segment errors almost always involve the movement of unitary segments and not the movement of component distinctive features. (SW)

This study deals with word retrieval problems of aphasic patients. This word-finding difficulty is a common characteristic of aphasics and many methods have been used by aphasia clinicians to attempt to remediate word retrieval skills. Cueing, one of the methods used, presumably facilitates word-finding by supplying additional information to the…