Understanding how a child's language system develops into an adult-like system is a central question in language development research. An increasingly influential account proposes that the brain constantly generates top-down predictions and matches them against incoming input, with higher-level cognitive models serving to minimize prediction…

The Japanese language has single/geminate obstruents characterized by durational difference in closure/frication as part of the phonemic repertoire used to distinguish word meanings. We first evaluated infants' abilities to discriminate naturally uttered single/geminate obstruents (/pata/ and /patta/) using the visual habituation-dishabituation…

Six experiments involving 192 infants and 1 experiment with 16 college students examined sensitivity to acoustic correlates of phrasal units in English. A basic finding is that nine-month-old infants are sensitive to acoustic markers that correspond to major phrasal units, a sensitivity that develops after six months. (SLD)

Investigation of the perception and production of English voiceless fricatives in normally developing monolingual 3- to 5-year-olds (N=12) partially supported the hypothesis that certain sound substitutions by older children are perceptually based substitutions, typified by poor discrimination, while others are phonetic substitutions--phonemic…