SEMANTIC TRANSPARENCY IN THE PROCESSING OF COMPOUNDS - CONSEQUENCES FOR REPRESENTATION, PROCESSING, AND IMPAIRMENT

The role of semantic transparency in morphological processing in gener al and in compound processing in particular is examined. It is argued that the notion of semantic transparency is crucial to an account of h ow compounds are represented and processed in the mind. A sketch of a model is proposed in which compound processing is described in terms o f stimulus properties, lexical properties, and conceptual properties. The model represents the notion of semantic transparency in terms of a four-way classification of the semantic relationship between a compou nd's constituents and the corresponding independent morphemes. It also distinguishes between semantically componential and noncomponential c ompounds. It is proposed that the model offers a framework within whic h experimental psycholinguistic findings can be understood and within which aphasic deficits associated with compound processing can be char acterized. As an example of this, the paper presents a reanalysis of a n aphasic patient who exhibits the tendency to interpret semantically opaque compounds as though they were transparent and to interpret opaq ue compounds in terms of a blend of constituent and whole-word meaning . It is argued that the underlying deficit in this patient is the fail ure for inhibition to result from the competition among stimuli at the conceptual level of representation. (C) 1998 Academic Press.