Published online by Cambridge University Press: 27 August 2014
Within the first year of life, infants learn to segment words from fluent speech. Previous research has shown that infants at 0;7·5 can segment consonant-initial words, yet the ability to segment vowel-initial words does not emerge until the age of 1;1–1;4 (0;11 in some restricted cases). In five experiments, we show that infants aged 0;11 but not 0;8 are able to segment vowel-initial words that immediately follow the function word the [ði], while ruling out a bottom-up, phonotactic account of these results. Thus, function words facilitate the segmentation of vowel-initial words that appear sentence-medially for infants aged 0;11.
This study is part of Yun Jung Kim's master's thesis. It was partly supported by a UCLA Research Mentorship Award (2011–2012) to YJK and NSF BCS-0951639 to MS. Parts of this research were presented at the Boston University Conference on Language Development (2010), the Acoustical Society of America (2010), and the International Conference on Infant Studies (2012).