Investigating problem-solving and critical-thinking skills among EFL postgraduate students in northern Thailand
Main Article Content
Abstract
This research employs a mixed-methods design to investigate postgraduate EFL students’ critical-thinking and problem-solving skills. Through purposive sampling, 54 Thai and international participants (between 23-25 years old with 29 females and 25 males) from three universities were selected. Quantitative data, collected through bilingual questionnaires (paper-based and online through Google form) and analyzed through descriptive statistics and t-test analysis, assessing problem-solving and critical thinking skills, revealed high proficiency among participants, with variations in creative problem-solving. Qualitative data from semi-structured interviews (face-to-face and online through MSTeam) through thematic analysis highlighted the significance of open communication, trust, and encouragement in supporting students’ academic endeavors. Challenges such as methodological obstacles and group disagreements highlighted the need for adaptability, critical-thinking, and collaborative problem-solving. Cultural and linguistic influences emerged as substantial factors impacting problem-solving approaches. The data integration emphasized the significance of skill development and the interconnectedness of language, culture, and academic performance. The discussion delves into the implications of tailored interventions, emphasizing the crucial role of supervision and cultural sensitivity. This study contributes to the broader discourse on EFL postgraduate education, shedding light on the intricate dynamics of skill development and fostering a call for further exploration and discussion within the academic community.
Article Details

This work is licensed under a Creative Commons Attribution 4.0 International License.
The articles featured in the Journal of Language and Culture (JLC) constitute academic works representing the viewpoints of the respective author(s). It is crucial to note that these opinions do not necessarily reflect those of the Editorial Board.
All articles published in JLC are released under the Creative Commons Attribution 4.0 International License (CC BY 4.0). This license grants permission for unrestricted use, distribution, and reproduction in any medium, provided proper credit is given to the original author(s) and the source.
References
Afshar, H. S. (2019). TEFL postgraduate students’ perception of critical thinking. Thinking skills and creativity in second language education: Case studies from international perspectives, 172. https://doi.org/10.4324/9781315098920-9
Anjariyah, D., Juniati, D., & Siswono, T. Y. E. (2022). How does working memory capacity affect students’ mathematical problem solving?. European Journal of Educational Research, 11(3), 1427–1439. https://doi.org/10.12973/eu-jer.11.3.1427
Azwati, A., Setiawan, S., & Purwati, O. (2022). EFL postgraduate students’ critical thinking beliefs and their ability in writing research methodology. Celtic: A Journal of Culture, English Language Teaching, Literature and Linguistics, 9(1), 39–52.
Boonsathirakul, J., & Kerdsomboon, C. (2021). The investigation of critical thinking disposition among Kasetsart university students. Higher Education Studies, 11(2), 224–232.
Braun, V., & Clarke, V. (2006). Using thematic analysis in psychology. Qualitative Research in Psychology, 3(2), 77–101. https://doi.org/10.1191/1478088706qp063oa
Creswell, J. W., & Creswell, J. D. (2023). Research design: Qualitative, quantitative, and mixed methods approaches. Sage publications.
Dörnyei, Z., & Dewaele, J.-M. (2022). Questionnaires in second language research: construction, administration, and processing (3rd ed.). Routledge.
Ennis, R. H. (1987). A taxonomy of critical thinking dispositions and abilities. In J. B. Baron & R. J. Sternberg (Eds.), Teaching thinking skills: Theory and practice (pp. 9–26). W.H. Freeman and Company.
Ho, U. (2024). Problems with academic writing encountered by EFL postgraduate students at a university in the Mekong Delta. https://doi.org/10.2139/ssrn.4789928
Li, J., & Ren, Y. (2020). The cultivation of critical thinking ability in academic reading based on questionnaires and interviews. International Journal of Emerging Technologies in Learning (iJET), 15(22), 104–120. https://doi.org/10.3991/ijet.v15i22.18197
Lucks, J. B. (2008). Python–All a scientist needs. arXiv. https://doi.org/10.48550/arXiv.0803.1838
Mach, K. J., Mastrandrea, M. D., Freeman, P. T., & Field, C. B. (2017). Unleashing expert judgment in assessment. Global Environmental Change, 44, 1–14.
Mayer, R. E. (1992). Thinking, problem solving, cognition. WH Freeman/Times Books/Henry Holt & Co.
Namsaeng, P., & Sukying, A. (2021). The effect of group reading strategy on critical thinking skills in Thai EFL university learners. Journal of English Language Teaching and Applied Linguistics, 3(2), 30¬–40.
Nguyen, T. T. (2025). Exploring Vietnamese EFL postgraduate students’ competence in research writing. Multidisciplinary Reviews, 8(5), 2025148. https://doi.org/10.31893/multirev.2025148
Perez, F., Granger, B. E., & Hunter, J. D. (2010). Python: An ecosystem for scientific computing. Computing in Science & Engineering, 13(2), 13–21. https://doi.org/10.1109/mcse.2010.119
Pimdee, P., Sukkamart, A., Nantha, C., Kantathanawat, T., & Leekitchwatana, P. (2024). Enhancing Thai student-teacher problem-solving skills and academic achievement through a blended problem-based learning approach in online flipped classrooms. Heliyon, 10(7).
Ploysangwal, W. (2018). An assessment of critical thinking skills of Thai undergraduate students in private Thai universities in Bangkok through an analytical and critical reading test. University of the Thai Chamber of Commerce Journal Humanities and Social Sciences, 38(3), 75–91.
Rattanachaithada, R., Kwangmuang, P., Vongtathum, P., Gamlunglert, R., & Srikoon, S. (2025). A confirmatory factor analysis of scientific critical thinking in secondary school. Cogent Education, 12(1), 2467508.
Rungsawang, S., & Pookcharoen, S. (2022). An investigation of technology integration to promote Thai EFL university students’ critical thinking skills: a phenomenological study [Doctoral dissertation, Thammasat University]. TU Digital Collections. https://doi.org/10.14457/TU.the.2022.1568
Rusticus, S., Eva, K., & Peterson, L. (2018). Construct-aligned rating scales improve the reliability of program evaluation data. Canadian Journal of Program Evaluation, 33(1), 1-20.
Sari, U., Çelik, H., Pektaş, H. M., & Yalçın, S. (2022). Effects of STEM-focused Arduino practical activities on problem-solving and entrepreneurship skills. Australasian Journal of Educational Technology, 38(3), 140–154. https://doi.org/10.14742/ajet.7293
Srirak, S. (2023). Enhancing language learning through critical thinking incorporation: how do EFL academics and students in a Thai university perceive the incorporation of critical thinking skills in teaching and learning? [Doctoral dissertation, RMIT University]. https://doi.org/10.25439/rmt.27596727
Thampi, K. P. P. S., Ponathong, C., & Yongsorn, C. (2024). Critical thinking skills and dispositions: Perceptions of higher education students in Thailand. Journal of Education and Innovation, 26(3), 153–167.
Vero, E., & Puka, E. (2018). The effectiveness of critical thinking in higher education. Online Journal Modelling the New Europe, 26, 217–233. https://doi.org/10.24193/ojmne.2018.26.13
Vincent-Lancrin, S., Gonzáles-Sancho, C., Bouckaert, M., de Luca, F., Fernández-Barrerra, M., Jacotin, G., Urgel, J., & Vidal, Q. (2019). Fostering students’ creativity and critical thinking: What it means in school (Educational Research and Innovation). OECD Publishing. https://doi.org/10.1787/62212c37-en
Wangmanee, P., & Kaowiwattanakul, S. (2024). Enhancing speaking skills and critical thinking skills in the EFL undergraduates literature classroom through contemplative approach [Doctoral dissertation, University of Phayao].
Wu, D., & Buripakdi, A. (2022). Narratives of EFL postgraduate thesis writing at a university in Thailand. LEARN Journal: Language Education and Acquisition Research Network, 15(1), 495–523. https://doi.org/10.17576/gema-2021-2103-02
Wulandari, A. Y. R., & Nurhayati, N. (2018). The relationship between verbal ability and critical thinking skill: The implementation of susan loucks horsley model. Jurnal Ilmiah Pendidikan Fisika Al-Biruni, 7(1), 89–97. https://doi.org/10.24042/jipfalbiruni.v7i1.2507
Yildirim, B., & Ozkahraman, S. (2011). Critical thinking in nursing process and education. International Journal of Humanities and Social Science, 1(13), 257–262.
Yousefi, S., & Mohammadi, M. (2016). Critical thinking and reading comprehension among postgraduate students: The case of gender and language proficiency level. Journal of Language Teaching and Research, 7(4), 802. https://doi.org/10.17507/jltr.0704.23