Charlie Nagle

Associate Professor of Spanish & Spanish Language Program Director


Dept:World Languages And Cultures
Office:3102g Pearson
505 Morrill Rd.
Ames IA

Area of expertise: research methods, second and foreign language acquisition, second language pronunciation

Topics of interest: bilingualism, Spanish language and culture, Spanish phonetics and phonology


I am an Associate Professor of Spanish and the Director of the Spanish Language Program at Iowa State University. I received my PhD in Spanish and Applied Linguistics from Georgetown University in 2014. My main area of research is in second language pronunciation and individual differences. My current research program addresses three areas: how learners’ pronunciation develops over time, including the extent to which changing patterns of motivation and language use affect development; the relationship between the perception and production of second language sounds; and, teachers’ beliefs on pronunciation learning and teaching. I am also passionate about statistics, particularly mixed-effects modeling. At Iowa State, I teach all levels of Spanish language and upper-level linguistics courses such as “Introduction to Spanish Phonology” and “Bilingualism in the Spanish-Speaking World.” If you are interested in my work, you can download many of my publications through my Iowa State Digital Repository page, linked above. You can also keep up with my projects through ResearchGate.

Recent / Major Publications

  • Nagle, C. (in press). Revisiting perception-production relationships: A new approach to investigating perception as a time-varying predictor. To appear in Language Learning.

  • Nagle, C. L., & Huensch, A. (2020). Expanding the scope of L2 intelligibility research: Intelligibility, comprehensibility, and accentedness in L2 Spanish. Journal of Second Language Pronunciation.

  • Nagle, C., Trofimovich, P., & Bergeron, A. (2019). Toward a dynamic view of second language comprehensibility. Studies in Second Language Acquisition, 41(4), 647–672.

  • Nagle, C. (2018). Motivation, comprehensibility, and accentedness in L2 Spanish: Investigating motivation as a time-varying predictor of pronunciation development. The Modern Language Journal, 102(1), 199–217.