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)

A study of a brain-damaged subject's impaired performance on tasks involving production of verbal numbers found that lexical errors occurred in spoken production but not in written production, while syntactic error occurred in both modes. (Author/CB)