Daniel R. IsbellAssistant Professor
PhD, Michigan State University

Daniel R. Isbell
Daniel R. Isbell

Moore Hall 555
disbellat symbolhawaii.edu

My primary areas of interest are language assessment and instructed second language acquisition, and I seek to develop a richer interface between the two. In language assessment, I examine the validity of large-scale proficiency test score interpretations and uses as well as the qualities and usefulness of ‘smaller’ tests, such as local placement exams and instructionally-relevant diagnostic tests. In instructed second language acquisition, much of my work has involved the development of L2 pronunciation and language learning via technology. Although not exclusively, I do primarily quantitative research and have taken an interest in quantitative methodology in L2 research, with an emphasis on research ethics.

Areas of Expertise

  • language testing and assessment
  • second language pronunciation
  • instructed second language acquisition
  • technology in language learning
  • quantitative research methods

Selected Publications

Isbell, D., & Kim, J. (2023). Developer involvement and conflict of interest in high-stake English language test validation research. Research Methods in Applied Linguistics, 2(3). https://doi.org/10.1016/j.rmal.2023.100060 

Isbell, D., Crowther, D., & Nishizawa, H. (2023). Extrapolating Duolingo English Test scores: How university stakeholders perceive spoken performances. Language Testing. https://doi.org/10.1177/02655322231165984 

Isbell, D., & Lee, J. (2022). Self-assessment of comprehensibility and accentedness in L2 Korean. Language Learning, 72(3), 806-852. https://doi.org/10.1111/lang.12497 

Isbell, D., Brown, D., Chen, M., Derrick, D., Ghanem, R., Gutierrez-Arvizu, M. N., Schnur, E., Zhang, M., & Plonsky, L. (2022). Misconduct and questionable research practices: The ethics of quantitative data handling and reporting in applied linguistics. Modern Language Journal, 106(1). https://doi.org/10.1111/modl.12760

Isbell, D., & Kremmel, B. (2020). Test review: Current options in at-home language proficiency tests for making high-stakes decisions. Language Testing. Online Advance Access. https://doi.org/10.1177%2F0265532220943483

Loewen, S., Isbell, D., & Sporn, Z. (2020). The effectiveness of app-based language instruction for developing receptive linguistic knowledge and oral communicative ability. Foreign Language Annals, 53(2), 209-233. https://doi.org/10.1111/flan.12454