We examine metonymy at psycho- and neurolinguistic levels, seeking to adjudicate between two possible processing implementations. We compare highly conventionalized systematic metonymy to lesser-conventionalized circumstantial metonymy. Whereas these two metonymy types differ in terms of contextual demands, they each reveal a similar dependency between the named and intended conceptual entities. We reason that if each metonymy yields a distinct processing time course and substantially non-overlapping preferential localization pattern, it would not only support a two-mechanism view but would suggest that conventionalization (...) acts as a linguistic categorizer. By contrast, a similar behavior in time course and localization would support a one-mechanism view and the inference that conventionalization acts instead as a modulator of contextual felicitousness, and that differences in interpretation introduced by conventionalization are of degree, not of kind. Results from three paradigms: self-paced reading, event-related potentials, and functional magnetic resonance imaging, reveal the following: no main effect by condition for either metonymy type immediately after the metonymy trigger, and a main effect for only the Circumstantial metonymy one word post-trigger ; a N400 effect across metonymy types and a late positivity for Circumstantial metonymy ; and a highly overlapping activation connecting the left ventrolateral prefrontal cortex and the left dorsolateral prefrontal cortex. Altogether, the pattern observed does not reach the threshold required to justify a two-mechanism system. Instead, the pattern is more naturally understood as resulting from the implementation of a generalized referential dependency mechanism, modulated by degree of context dependence/conventionalization, thus supporting architectures of language whereby “lexical” and “pragmatic” meaning relations are encoded along a cline of contextual underspecification. (shrink)

We critically address current theories of figurative language, focusing on the role of literal or compositional meaning in the interpretation of non-literal expressions, including idioms and metaphors. Specifically, we formulate and discuss the processing hypothesis that compositional meaning may either facilitate or impede the recovery or construction of the intended figurative meaning depending on multiple factors, and in particular, on the expression’s decomposability and on the “strength” of semantic relations between the compositional and figurative meanings. As a case study, we (...) consider research on processing and acquisition of figurative expressions in highly verbal individuals with autism spectrum disorder in comparison to neuro-typical individuals, and examine the factors that may account for the observed comprehension deficits in the ASD group. Based on this evidence, we discuss some of the strategies employed by language users in processing non-compositional or non-literal expressions, and we highlight implications for research on natural language comprehension and processing systems in the domain of figurative meaning. (shrink)