Melissa A. Redford

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The current study compared children's and adults' ability to produce inherent and context-specific vowel duration differences with their ability to repeatedly produce the same vowel in the same context. Children (5-and 8-year-olds) and adults produced real English words in a frame sentence multiple times. Mean vowel duration and variability in vowel(More)
2 ABSTRACT Speaking is an intentional activity. It is also a complex motor skill; one that exhibits protracted development and the fully automatic character of an overlearned behavior. Together these observations suggest an analogy with skilled behavior in the non-­‐language domain. This analogy is used here to argue for a model of production that is(More)
Discourse prosody in school-aged children's narratives was investigated to test for developmental changes in transitional prosody and to characterize the acquisition of key contrastive features for marking continuation versus completion. Spontaneous narratives were obtained from 42 children (5 to 7 years old) and 14 adult caregivers. The narratives were(More)
PURPOSE To examine when and how socially conditioned distinct speaking styles emerge in typically developing preschool children's speech. METHOD Thirty preschool children, ages 3, 4, and 5 years old, produced target monosyllabic words with monophthongal vowels in different social-functional contexts designed to elicit clear and casual speaking styles.(More)
Segmental duration patterns have long been used to support the proposal that syllables are basic speech planning units, but production experiments almost always confound syllable and word boundaries. The current study tried to remedy this problem by comparing word-internal and word-peripheral consonantal duration patterns. Stress and sequencing were used to(More)
PURPOSE As children mature, changes in voice spectral characteristics co-vary with changes in speech, language, and behavior. In this study, spectral characteristics were manipulated to alter the perceived ages of talkers' voices while leaving critical acoustic-prosodic correlates intact, to determine whether perceived age differences were associated with(More)
It is almost a truism that language aids serial-order control through self-cuing of upcoming sequential elements. We measured speech onset latencies as subjects performed hierarchically organized task sequences while "thinking aloud" each task label. Surprisingly, speech onset latencies and response times (RTs) were highly synchronized, a pattern that is(More)