This paper discusses the ways in which aphasic disorders are categoriz
ed. The language disorders of 34 children with acquired childhood apha
sia from a range of aetiologies were categorized according to two syst
ems: Goodglass and Kaplan (1972) and Rapin and Allen (1987). This cate
gorization was based on comprehensive assessment data. Results demonst
rate that the majority of the children had aphasias which could not be
categorized by either of these two systems. The implications of these
results for the study of acquired childhood aphasia are discussed.