Journal of Speech, Language, and Hearing Research Vol.53 1280-1293 October 2010. doi:10.1044/1092-4388(2009/09-0003)
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The Role of Vocal Practice in Constructing Phonological Working Memory

Tamar Keren-Portnoy
Marilyn M. Vihman
University of York, Heslington, York, United Kingdom

Rory A. DePaolis
James Madison University, Harrisonburg, VA

Chris J. Whitaker
Bangor University, Bangor, Gwynedd, United Kingdom

Nicola M. Williams
University of York

Contact author: Tamar Keren-Portnoy, Department of Language and Linguistic Science, University of York, Heslington, York YO10 5DD, United Kingdom. E-mail: tkp502{at}york.ac.uk.

Purpose: In this study, the authors looked for effects of vocal practice on phonological working memory.

Method: A longitudinal design was used, combining both naturalistic observations and a nonword repetition test. Fifteen 26-month-olds (12 of whom were followed from age 11 months) were administered a nonword test including real words, "standard" nonwords (identical for all children), and nonwords based on individual children's production inventory (IN and OUT words).

Results: A strong relationship was found between (a) length of experience with consonant production and (b) nonword repetition and between (a) differential experience with specific consonants through production and (b) performance on the IN versus OUT words.

Conclusions: Performance depended on familiarity with words or their subunits and was strongest for real words, weaker for IN words, and weakest for OUT words. The results demonstrate the important role of speech production in the construction of phonological working memory.

KEY WORDS: normal phonological development, nonword repetition, production practice


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