This paper examines the tacit assumptions behind different theories about the nature of language and aphasia, and it discusses critically the use of structural and generative linguistic theories to explain the behavior of aphasics, especially with regard to the difference between spoken and written discourse. It is proposed that, rather than try…

The use of a traditional syndrome-classification system for aphasics is examined critically from the different perspectives of medicine and psychometrics. Medicine views syndromes as dichotomous (present or not present) and necessarily indicative of an underlying pathognomic state or process, and psychometrics sees performances as varying along a…

The Psychotic Behavior Rating Scale uses a factor analysis approach to aid in differential diagnosis of autism, schizophrenia, mental retardation, aphasia, and other severe handicaps. The scale is compared with five existing qualitatively developed instruments, noting similarities and dissimilarities among the various scales. (Author/JDD)