Variability in word duration as a function of probability, speech style, and prosody.

This article examines how probability (lexical frequency and previous mention), speech style, and prosody affect word duration, and how these factors interact. Participants read controlled materials in clear and plain speech styles. As expected, more probable words (higher frequencies and second men...

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Publicado en:Language & Speech Vol. 52; no. 4; pp. 391 - 414
Autores principales: Baker RE, Bradlow AR
Formato: research tables/charts Journal Article
Publicado: Sage Publications Inc. Dec2009
Acceso en línea:Ver este registro en EBSCOhost
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        atl: Variability in word duration as a function of probability, speech style, and prosody.
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          Baker RE
          Bradlow AR
        affil: Department of Linguistics, Northwestern University, 2016 Sheridan Road, Evanston, IL 60208; r-baker2@northwestern.edu
      sug:
        subj:
          Phonetics
          Probability
          Speech Acoustics
          Speech Rate
          Variance Analysis
          Vocabulary
          Accents and Dialects
          Adult
          Audiorecording
          Comparative Studies
          Correlational Studies
          Female
          Hypothesis
          Illinois
          Male
          Middle Age
          Repeated Measures
          Replication Studies
          Sound Spectrography
          Speech Articulation Tests
          Speech Sample
          Students, Undergraduate Illinois
          Time Factors
          Two-Tailed Test
          Waveforms
          Wilcoxon Rank Sum Test
          Adult: 19-44 years
          Middle Aged: 45-64 years
          Female
          Male
      ab: This article examines how probability (lexical frequency and previous mention), speech style, and prosody affect word duration, and how these factors interact. Participants read controlled materials in clear and plain speech styles. As expected, more probable words (higher frequencies and second mentions) were significantly shorter than less probable words, and words in plain speech were significantly shorter than those in clear speech. Interestingly, we found second mention reduction effects in both clear and plain speech, indicating that while clear speech is hyper-articulated, this hyper-articulation does not override probabilistic effects on duration. We also found an interaction between mention and frequency, but only in plain speech. High frequency words allowed more second mention reduction than low frequency words in plain speech, revealing a tendency to hypo-articulate as much as possible when all factors support it. Finally, we found that first mentions were more likely to be accented than second mentions. However, when these differences in accent likelihood were controlled, a significant second mention reduction effect remained. This supports the concept of a direct link between probability and duration, rather than a relationship solely mediated by prosodic prominence.
      pubtype: Academic Journal
      doctype:
        research
        tables/charts
        Journal Article
      ougenre: Article
    language: English
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