Charlie Nagle

Associate Professor of Spanish & Spanish Language Program Director


Dept:World Languages And Cultures

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

Topics of interest: bilingualism, phonetics and phonology, research methods, second language learning, Spanish language and culture


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 second language speech learning. 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 research methodology. At Iowa State, I teach all levels of Spanish language, upper-level Spanish linguistics courses such as “Introduction to Spanish Phonology” and “Bilingualism in the Spanish-Speaking World”, and undergraduate and graduate linguistics courses in the Program in Applied Linguistics and Technology (Department of English). 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.

Grants and Awards

  • Fulbright Research and Teaching Award, University of Murcia (Murcia, Spain), Fall 2021. Examining the factors that shape willingness to communicate in a second language: Speaker and listener variables

  • National Science Foundation (BCS-2117665). Collaborative Research: A longitudinal approach to examining perception-production links in second language speech sound learning. With Melissa Baese-Berk (University of Oregon). Total Award: $382,245. Award to Iowa State: $249,079. Grant period: 9/1/21-8/31/24.

Recent / Major Publications

  • Nagle, C. (2021). Assessing the state of the art in longitudinal L2 pronunciation research: Trends and future directions. Journal of Second Language Pronunciation.

  • Nagle, C. L., & Baese-Berk, M. M. (2021). Advancing the state of the art in L2 speech perception-production research: Revisiting theoretical assumptions and methodological practices. Studies in Second Language Acquisition. Advance online publication.

  • Huensch, A., & Nagle, C. (2021). The effect of speaker proficiency on intelligibility, comprehensibility, and accentedness in L2 Spanish: A conceptual replication and extension of Derwing and Munro (1995a). Language Learning. Advance online publication.

  • Nagle, C., Trofimovich, P., Kennedy, S., & O’Brien, M. (2021). Beyond linguistic features: Exploring behavioral and affective correlates of comprehensible second language speech. Studies in Second Language Acquisition. Advance online publication.