The present study explored development in Spanish vowel production during a short-term study abroad program. The production patterns of a group of learners studying abroad in a 4-week program in the Dominican Republic were compared in terms of overall vowel quality, tendency to diphthongize /e/ and /o/, and vowel duration to those of a similar group of learners studying in the at-home context. Results revealed no significant changes or differences between groups in vowel quality or diphthongization, but a significant improvement (i.e., reduction) in vowel duration for /a/, /o/, and /u/ for the at-home group only. Findings are discussed in relation to previous research, and areas for future research are outlined.
Avizia Long, Megan Solon, and Silvina Bongiovanni. "Context of learning and second language development of Spanish vowels" Studies in Hispanic and Lusophone Linguistics (2018). doi:10.1515/shll-2018-0003