Reports on a case study where an individual's errors in productive tasks are analyzable as functions of morphological properties of the target and/or the response. It is shown that the morphological errors are explainable in the context of a two-stage retrieval system applying to both affixed and unaffixed words. (33 references) (JL)

This article explores a model of lexicalisation based upon the constraints that lexicalisation is an interactive process and that it takes place in two stages. The article examines in depth the time-course of normal lexicalisation, speech error data, and the cognitive neuropsychology of speech production. (16 references) (CK)