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Statistical Distributions Of Consonant Variants In Infant-Directed Speech: Evidence That /T/ May Be Exceptional, Laura Dilley, Jessica Gamache, Yuanyuan Wang, Derek M. Houston, Tonya R. Bergeson

Scholarship and Professional Work - Communication

Statistical distributions of phonetic variants in spoken language influence speech perception for both language learners and mature users. We theorized that patterns of phonetic variant processing of consonants demonstrated by adults might stem in part from patterns of early exposure to statistics of phonetic variants in infant-directed (ID) speech. In particular, we hypothesized that ID speech might involve greater proportions of canonical /t/ pronunciations compared to adult-directed (AD) speech in at least some phonological contexts. This possibility was tested using a corpus of spontaneous speech of mothers speaking to other adults, or to their typically-developing infant. Tokens of word-final alveolar …