This project examines both the impact of a metacognitive instruction on L2 learners’ task engagement and the methodological consequences of alternative statistical model specifications in a quasi‐experimental context. The findings contribute to the ongoing methodological innovations in instructed second language acquisition (ISLA) by (a) empirically evaluating the efficacy of metacognitive instruction, and (b) identifying optimal analytic approaches for causal inference in short time series, longitudinal intervention research.

Phung, H. (2025). Metacognition and Engagement in Second Language Task-Based Interaction: A Comparative Interrupted Time Series Study [Ph.D., University of Hawai’i at Manoa]. https://hdl.handle.net/10125/111257

This project focuses on designing and evaluating task-based materials for intermediate Vietnamese which investigates both learners’ perceptions and performance as well as teachers’ learning over time as they participate into a professional learning community. See more https://www.viettblt.com/projects

Phung, H., Nguyen, C., & Sakach, A. (2025). Sustaining teacher development in TBLT through a professional learning community (PLC). GUAVA Newsletter, 5, 20-25. 

Tran, N., Hoang, D. T. N., Gillespie, R., Yen, T. T. H., & Phung, H. (2024). Enhancing EFL learners’ speaking and listening skills through authentic online conversations with video conferencing tools. Innovation in Language Learning and Teaching, 0(0), 1–11. https://doi.org/10.1080/17501229.2024.2334809

Phung, H., Tran, N., & Hoang, D. (2023). Empowering students with authentic tasks to learn English beyond the classroom: A club-based model. Innovation in Language Learning and Teaching, 17(2), 191–201.
https://doi.org/10.1080/17501229.2021.1998068

Hoang, D. T. N., Phung, H., & Tran, N. (2023). Profiling digital nativeness of pre-service teachers: Validity evidence for the Vietnamese Digital Natives Assessment Scale (V-DNAS). Interactive Learning Environments, 31(10), 6890–6904. https://doi.org/10.1080/10494820.2022.2053167

Nguyen, H., Phung, H., & Nguyen, H. (2023). An overview of Vietnamese for teachers of English language learners. In B. Yoon, & K. Pratt (Eds.), Primary Language Impact on Second Language and Literacy Learning: Linguistically Responsive Strategies for Classroom Teachers. Lexington Books

Phung, H. (2023). Bridging the research-practice gap with Multiʻōlelo: An initiative for language research communication. AAALGrads Newsletter 7(2), 20-22.

Ziegler, N., Parlak, Ö., & Phung, H. (2022). Interactionist perspectives and the role of Computer-Mediated Communication in SLA. N. Ziegler, & M. González-Lloret (Eds.), Handbook of SLA and technology. Routledge.

Ziegler, N., Moranski, K., Smith, G., & Phung, H. (2020). Metacognitive instruction and interactional feedback in a computer-mediated environment. TESL Canada Journal, 37(2), 210–233. https://doi.org/10.18806/tesl.v37i2.1337

Phung, H., Choe, A., Diez-Ortega, M., Eguchi, M., Holden, D., Mendoza, A., & Nguyen, T. (2020). The Multiʻōlelo initiative for language research communications. Second Language Studies, 38(1), 5–17.

Ziegler, N., & Phung, H. (2019). Technology-mediated task-based interaction: The role of modality. ITL – International Journal of Applied Linguistics, 170(2), 252-277. Doi: 10.1075/itl.19014.zie

Mendoza, A., & Phung, H. (2019). Motivation to learn languages other than English: A critical research synthesis. Foreign Language Annals, 52(1), 121-140. Doi: 10.1111/flan.12380.

Nguyen, H. & Phung, H. (September 26-27, 2025). Humanizing proficiency-based reading materials for Vietnamese heritage learners. SEALC Fall 2025 Hybrid Symposium. Honolulu, Hawaii.

Nguyen, H. & Phung, H. (July 12, 2025). A humanistic approach to LCTLs materials development. The 41^st COTSEAL Annual Conference.

Nguyen, H. & Phung, H. (June 29, 2025). Taskifying literature: Using reading circles to engage heritage learners. The 2nd Venice-Tempe Vietnamese Language Teaching Symposium.

Phung, H. & Nguyen, H (July 5-7). Tasks in teaching of Vietnamese as a less commonly taught/heritage language. Paper presented at the 5^th Task-Based Language Teaching in Asia Conference, Meijo University (Nagoya Dome-Mae Campus), Nagoya, Japan

Phung, H. et al (July 5-7). The realities of TBLT Implementation in Vietnamese Language Teaching: Voices from materials developers and classroom teachers. Paper presented at the 5^th Task-Based Language Teaching in Asia Conference, Meijo University (Nagoya Dome-Mae Campus), Nagoya, Japan