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1. Baayen, R. H. (2008). Analyzing Linguistic Data: A Practical Introduction to Statistics Using R (Cambridge University Press, Cambridge, UK).
2. Baayen, R. H. (2011). “Data sets and functions with ‘Analyzing Linguistic Data: A practical introduction to statistics’ ” (Version 1.4) [R package], (Last viewed 20 January 2014).
3. Bates, D. , Maechler, M. , and Bolker, B. (2012). “Linear mixed-effects models using S4 classes” (Version 0.999999-0) [R package], (Last viewed 20 January 2014).
4. Boberg, C. (2008). “Regional phonetic differentiation in standard Canadian English,” J. English Linguist. 36, 129154.
5. Boersma, P. , and Weenink, D. (2012). Praat: Doing Phonetics by Computer (Version 5.3.35), (Last viewed December 8, 2012).
6. Bosch, L. , and Ramon-Casas, M. (2011). “Variability in vowel production by bilingual speakers: Can input properties hinder the early stabilization of contrastive categories?,” J. Phonetics 39, 514526.
7. Bosch, L. , and Sebastiáan-Gallés, N. (2001). “Early language discrimination capacities in infants from bilingual environments,” in Research on Child Language Acquisition, edited by M. Almgren, A. Barrena, M. J. Ezeizabarrena, I. Idiazabal, and B. MacWhinney (Cascadilla Press, Somerville, MA).
8. Clopper, C. G. , and Pisoni, D. B. (2004). “Some acoustic cues for the perceptual categorization of American English regional dialects,” J. Phonetics 32, 111140.
9. Cristia, A. , and Seidl, A. (2013). “The hyperarticulation hypothesis of infant-directed speech,” J. Child Language. See
10. Escudero, P. , Boersma, P. , Schurt Rauber, A. , and Bion, R. (2009). “A cross-dialect acoustic description of vowels: Brazilian and European Portuguese,” J. Acoust. Soc. Am. 126, 13791393.
11. Evanini, K. (2009). “The permeability of dialect boundaries: A case study of the region surrounding Erie, Pennsylvania,” Publicly Accessible Penn Dissertations, (Last viewed 20 January 2014).
12. Flege, J. E. , MacKay, I. R. A. , and Meador, D. (1999). “Native Italian speakers' production and perception of English vowels,” J. Acoust. Soc. Am. 106, 29732987.
13. Labov, W. , Ash, S. , and Boberg, C. (2006). The Atlas of North American English: Phonetics, Phonology and Sound Change. A Multimedia Reference Tool (Mouton de Gruyter, Berlin).
14. Pallier, C. , Bosch, L. , and Sebastián-Gallés, N. (1997). “A limit on behavioral plasticity in speech perception,” Cognition, 64, B9B17.
15. Soderstrom, M. (2007). “Beyond babytalk: Re-evaluating the nature and content of speech input to preverbal infants,” Dev. Rev. 27, 501532.
16.Statistics Canada (2011). “Population by knowledge of official languages, age groups (total), 2011 counts, for Canada, provinces and territories, and census metropolitan areas and census agglomerations,” (Last viewed 20 January 2014).
17. Werker, J. F. (2012). “Perceptual foundations of bilingual acquisition in infancy,” Ann. N.Y. Acad. Sci. 1251, 5061.
18. Werker, J. F. , Pons, F. , Dietrich, C. , Kajikawa, S. , Fais, L. , and Amano, S. (2007). “Infant-directed speech supports phonetic category learning in English and Japanese,” Cognition 103, 147162.

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Does the acoustic input for bilingual infants equal the conjunction of the input heard by monolinguals of each separate language? The present letter tackles this question, focusing on maternal speech addressed to 11-month-old infants, on the cusp of perceptual attunement. The acoustic characteristics of the point vowels /a,i,u/ were measured in the spontaneous infant-directed speech of French-English bilingual mothers, as well as in the speech of French and English monolingual mothers. Bilingual caregivers produced their two languages with acoustic prosodic separation equal to that of the monolinguals, while also conveying distinct spectral characteristics of the point vowels in their two languages.


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