THE STATUS OF DOUBLE LETTERS IN GRAPHEMIC REPRESENTATIONS

This paper addresses the issue of the structure of graphemic output re presentations via an analysis of the spelling performance of a patient with acquired dysgraphia. It is argued that the patient's pattern of performance with words that contain double letters (e.g., ''bb'' in '' rabbit'') is inconsistent with the view that graphemic representations are simple linear sequences of graphemes (or abstract letter identiti es). Rather, it is proposed that graphemic representations are multidi mensional structures that separately encode information about grapheme identity and grapheme quantity. (C) 1996 Academic Press, Inc.