Semantic information is used by a deep dyslexic to parse compounds

We report a case study of a 48 year-old patient, J.O., who was tested 20 ye ars after the removal of a tumor in the left temporal-parietal region. This surgery and subsequent radiation resulted in right side paralysis and nume rous language problems. Tests of J.O.'s single word reading abilities indic ate that she could be classified as a deep dyslexic with over 16% of her er rors in word naming having a dear semantic relationship with the target wor d (Coltheart, 1980). We examined]Icr ability to read compound words aloud a nd following Libben (1993) we provide evidence that J.O. is a second case i n which there is obligatory access of morphological constituents of compoun d words. These data are discussed within the context of Libben's (1998) com pound word processing model. (C) 2001 Academic Press.