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Published online by Cambridge University Press: 12 March 2026
The organization and structure of the lexicon in a linguistic performance model is here examined, using data elicited from dyslexic patients suffering from focal brain lesions. It is argued that phonological, semantic, and orthographic representations, in separate sub-lexicons, are needed to account for the selective reading and writing disorders. The role of such data and their relevance to linguistic theory are discussed. Linguistic concepts provide the framework for investigating both normal and abnormal (e.g. aphasic) speech production and comprehension. In turn, data from aphasia may provide new insights into the nature of the mental grammar.
This paper is based upon the Presidential Address presented at the Annual Meeting of the Linguistic Society of America on December 28, 1985, in Seattle, Washington.
Space limitations do not permit a full expression of the debt I owe to all my teachers, students, colleagues, and friends. However, on this occasion of my Presidential Address, I feel I must at least express my deepest gratitude to the late Harry Hoijer (who taught my first linguistics course), to Peter Ladefoged (my doctoral adviser, collaborator, and colleague without whose guidance I would not be here), to Noam Chomsky (the major influence on my linguistic thinking as he has been for a large portion of the present generation of linguists and other cognitive scientists), to Freda Newcombe (for imparting her knowledge of neuropsychology and for guiding my research with her patients), to Antonio and Hanna Damasio (for teaching me what I know about the neurological substrate of language), and to Jack Fromkin (for trying to keep me intellectually honest and for his patience, inspiration, and support). I would also like to acknowledge the support provided by a UCLA Academic Senate Research Grant.