Étude d'un biais prosodique précoce : le cas de la loi iambo-trochaïque

TL;DRAbstract

The goal of this doctoral dissertation was to explore the mechanisms underlying linguistic prosodic perception. Prosody is carried in the speech signal by a number of acoustic cues, including duration, intensity and pitch. Importantly for language acquisition, prosody could help infants learn words and word order in their native language. Therefore, we studied a mechanism that could support these early prosodic abilities: the iambic/trochaic law (ITL). The ITL (Woodrow, 1909; Hayes, 1995; Nespor et al., 2008) is a mechanism that organizes auditory perception and was proposed to have an important role not only in adult speech perception but also in language acquisition in infancy. The ITL states that sounds (e.g., syllables, musical notes, etc.) contrasting in intensity/pitch form pairs with initial prominence, i.e., a trochaic pattern (strong-weak or high-low), and those contrasting in duration form pairs with final prominence, i.e., an iambic pattern (short-long). However, languages d

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