Lexical concepts, cognitive models and meaning-construction

In this paper I address the role of words in meaning-construction. My starting point is the observation that the 'meanings' associated with words are protean in nature. That is, the semantic values associated with words are flexible, open-ended and highly dependent on the utterance context in which they are embedded. In attempting to provide an account of meaning-construction that coheres with this observation I develop a cognitively-realistic theory of lexical representation and a programmatic theory of lexical concept integration. My fundamental claim is that there is a basic distinction between lexical concepts, and meaning. While lexical concepts constitute the semantic units conventionally associated with linguistic forms, and form an integral part of a language user's individual mental grammar, meaning is a property of situated usage-events, rather than words. That is, meaning is not a function of language per se, but arises from language use. I present an account of lexical concepts and the conceptual knowledge structures, cognitive models, with respect to which they are relativised. I also situate this theory within a usage-based account. I then develop a theory of lexical concept integration which serves to provide an account of how lexical concepts are combined in service of situated meaning-construction. As the constructs lexical concept and cognitive model are central to the theory of lexical representation and meaning-construction I present, I refer to the approach developed here as the Theory of Lexical Concepts and Cognitive Models, or LCCM Theory.