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This chapter introduces chief postulates common to usage-based (UB) approaches to language. The UB approach maintains that speakers’ experiences with language shape how language is stored. Experiences with specific words and word combinations in particular linguistic, discursive, and social contexts accrue in memory and subsequently contribute to patterns of variability evident in speech productions. Usage-based approaches regularly consider independent effects on lexical representations of decontextualized prior probabilities (e.g. phone/word/bigram frequencies, type frequencies), and, increasingly, contextually informed counts (e.g. lexical items’ cumulative exposure to conditioning effects of the production contexts, phone/word probabilities) are considered. This chapter offers an overview of studies exploring the connection between usage patterns and bilingual sound systems as well as studies exploring evidence of interlingual influence arising from bilingual lexical storage (schematic ties in memory). The chapter suggests potential avenues for future UB research into bilingual phonetics and phonology.
Word production variability is widespread in speech, and rates of variant production correlate with many factors. Recent research suggests mental representation of both canonical word forms and distinct reduced variants, and that production and processing are sensitive to variant frequency. What factors lead to frequency-weighted variant representations? An experiment manipulated following context and word repetition for final t/d words in read, narrative English speech. Modeling the experimentally generated data statistically showed higher final-segment deletion in tokens followed by consonant-initial words, but no evidence of increased deletion with repetition, regardless of context. Deletion rates were also higher the greater a word's cumulative exposure to consonant contexts (measured from distributional statistics), but there was no effect of word frequency. Token effects are interpreted in terms of articulation processes. The type-level context effect is interpreted within exemplar and usage-based models of language to suggest that experiences with word variants in contexts register as frequency-weighted representations.
It has been argued speakers' knowledge of the probabilities of certain phones, words, and syntactic structures affects language production (Bell, Brenier, Gregory, Girand, & Jurafsky, 2009; Tily, Gahl, Arnon, Snider, Kothari, & Bresnan, 2009). This study provides evidence for effects of grammatical relation probabilities by identifying significant effects on verb morphology in the Spanish presentative [haber ‘there (be)’+ NP] construction stemming from nouns with varying proportion of use in subject function. In addition to this novel type of probability (grammatical relation), we present calculations that are not context-dependent but cumulative, reflecting speakers' overall experience with these nouns in the grammar. We conduct variationist analyses on corpora of spoken Puerto Rican Spanish. Our results reveal that nouns with a high probability of subject function promote the analogical leveling of haber by increasing the likelihood of reanalysis of the object as subject of the construction. We interpret these results as suggesting speakers possess lexicalized knowledge of grammatical relation usage patterns.
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