Abstract
Different hypotheses have been made in order to explain the occurrence of semantic errors made by deep dyslexic patients. We present a series of three experiments of lexical production in a single case-study: firstly consistency measurements in single word reading, secondly frequency counts of semantic errors occurring during visual picture-naming and single word reading, and thirdly quantitative and qualitative analyses of free word association responses. Although in our Dutch-speaking patient a stabilized aphasia is documented, test results demonstrate an intra-patient profile variability in the deep dyslexic reading performance. Furthermore, we propose to explain the occurrence of semantic errors by a defective lexical search activity in a networklike lexicon and by a grammar-mediated compensatory strategy.
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