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Mapping of heard speech into articulation information and speech acquisition

Yuen et al. (1) find that hearing an “incongruent distractor” syllable shifts the tongue's place of articulation when pronouncing a second printed syllable. More specifically, hearing a /t/-initial phone in the distractor causes increased alveolar region tongue-palate contact when a subject seeks to pronounce a printed syllable with an initial /k/ or /s/. (The distractor/printed syllables were nonword stimuli such as /kib/ and /seeb/.) Yuen et al. (1) seek to interpret this effect as a speech phenomenon only in terms of potential speech perception processes. This interpretation overlooks the well-attested existence of a capability within the faculty of speech for overheard speech to be mapped directly and automatically into articulations independently of perception/comprehension.