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  Listeners normalize speech for contextual speech rate even without an explicit recognition task

Maslowski, M., Meyer, A. S., & Bosker, H. R. (2019). Listeners normalize speech for contextual speech rate even without an explicit recognition task. The Journal of the Acoustical Society of America, 146(1), 179-188. doi:10.1121/1.5116004.

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Maslowski_Meyer_Bosker_2019_Listeners normalize speech for contextual speech rate.pdf (Publisher version), 937KB
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Maslowski_Meyer_Bosker_2019_Listeners normalize speech for contextual speech rate.pdf
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https://asa.scitation.org/doi/suppl/10.1121/1.5116004 (Supplementary material)
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 Creators:
Maslowski, Merel1, 2, Author           
Meyer, Antje S.1, Author           
Bosker, Hans R.1, Author           
Affiliations:
1Psychology of Language Department, MPI for Psycholinguistics, Max Planck Society, ou_792545              
2International Max Planck Research School for Language Sciences, MPI for Psycholinguistics, Max Planck Society, ou_1119545              

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Free keywords: speech rate; rate normalization; lexical access; word recognition
 Abstract: Speech can be produced at different rates. Listeners take this rate variation into account by normalizing vowel duration for contextual speech rate: An ambiguous Dutch word /m?t/ is perceived as short /mAt/ when embedded in a slow context, but long /ma:t/ in a fast context. Whilst some have argued that this rate normalization involves low-level automatic perceptual processing, there is also evidence that it arises at higher-level cognitive processing stages, such as decision making. Prior research on rate-dependent speech perception has only used explicit recognition tasks to investigate the phenomenon, involving both perceptual processing and decision making. This study tested whether speech rate normalization can be observed without explicit decision making, using a cross-modal repetition priming paradigm. Results show that a fast precursor sentence makes an embedded ambiguous prime (/m?t/) sound (implicitly) more /a:/-like, facilitating lexical access to the long target word "maat" in a (explicit) lexical decision task. This result suggests that rate normalization is automatic, taking place even in the absence of an explicit recognition task. Thus, rate normalization is placed within the realm of everyday spoken conversation, where explicit categorization of ambiguous sounds is rare.

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Language(s): eng - English
 Dates: 2019-06-172019-07-162019-07
 Publication Status: Issued
 Pages: -
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 Rev. Type: -
 Identifiers: DOI: 10.1121/1.5116004
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Title: The Journal of the Acoustical Society of America
  Other : JASA
Source Genre: Journal
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Publ. Info: Woodbury, NY : Acoustical Society of America through the American Institute of Physics
Pages: - Volume / Issue: 146 (1) Sequence Number: - Start / End Page: 179 - 188 Identifier: ISSN: 1520-9024
CoNE: https://pure.mpg.de/cone/journals/resource/991042754070048