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Word and compound retrieval in Cantonese aphasic speakers

1 This is an exploratory study investigating the influences of different word properties, namely morphological structures and length, on the behaviour of naming. Six anomic and one aphasic transcortical motor type subjects were examined using a picture naming test. Retrieval accuracy, latency and error pattern were measured and analyzed to evaluate the relative order of retrieval difficulty for five types of word, namely Single word, Bisyllabic word, FreeFreeCompound, FreeBoundCompound and BoundFreeCompound. Results demonstrate that the anomic group reveal significant morphological effects in naming. However, there is slim evidence for the influence of word length in naming. One single case study was examined in detail owing to the large individual variation shown in the group study. A modification of the Logogen model (Morton, 1979, 1985) to include the morphological effect at the level of logogen system is assumed for the explanation of the impaired naming performance. Implications for therapeutic practice and future research are discussed.