A perceptual correlate of the labial-coronal effect
Résumé
Purpose: Statistical studies conducted in various languages on both infants and adults have revealed an intersyllabic preference for initiating words with a labial consonant-vowel-coronal consonant sequence. Speech motor constraints have been proposed to explain this so-called Labial-Coronal effect. This study was designed to test for a possible perceptual correlate of the Labial-Coronal effect in French adults. Method: We examined the perceptual stabilities of repeatedly presented disyllabic sequences, involving either a labial-vowel-coronal-vowel (LC) or a coronal-vowel-labial-vowel (CL) phonological structure. With this aim, we exploited the Verbal Transformation Effect, which refers to the perceptual changes experienced while listening to a speech form cycled in rapid and continuous repetition. Two experiments were carried out, involving either voiced or unvoiced plosive consonants. Results: In both experiments, a greater stability and attractiveness was observed for LC stimuli, which suggests that in a (...)LCLC(...) flow the listener could more naturally provide a segmentation into LC chunks. Conclusion: This study demonstrates that the Labial-Coronal effect also occurs in the course of on-line speech processing. This result is interpreted in relation with theories assuming a link between perception and action in the human speech processing system.
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