Abstract

Word Performance D 20% Orthographic-to-Intermediate Lesions (a) 0 B 10 20 30 40 50 60 70 80 90 100 B Concrete Word Performance C 0 10 20 30 40 50 60 70 80 90 100 Abstract Word Performance D 70% Semantic-to-Cleanup Lesions (b) Figure 5: Percent correct performance on concrete versus abstract words of the Plaut and Shallice (1993) simulation after (a) 1000 lesions of 20% of orthographic-tointermediate connections and (b) 1000 lesions of 70% of semantic-to-cleanup connections. The radius of each circle is proportional to the number of lesions yielding the performance levels indicated by the position of the circle. The diagonal lines correspond to equal levels of performance on concrete and abstract words. The advantage for concrete words in (a) corresponds to the findings for deep dyslexia (Coltheart et al., 1980), whereas the advantage for abstract words in (b) corresponds to the findings for concrete-word dyslexia (Warrington, 1981). 6 Plaut Word Reading an...

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