Abstract
Recently, it was hypothesized that cognitive overload plays a crucial role in the processing of grammatical items in agrammatic aphasics. In this paper, cognitive load is varied in four dimensions: semantics (concrete vs abstract), morphology (simple vs complex), pragmatics (plausible vs implausible), and syntax (short vs long). Four Broca's aphasics are tested in repetition, reading, cloze tests and writing to dictation. Results indicate that errors with grammatical items (articles) significantly increase, when cognitive load increases, i.e. articles are omitted or substituted more frequently when test sentences are abstract, morphologically complex, implausible and long as compared to concrete, morphologically simple, plausible and short sentences.
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