Influencing factors

Al-Ansari, S. (2000). Sheltered Curricular Exposure and Unsheltered Extra-Curricular Exposure as factors influencing the development of Academic Proficiency in ESL. International Review of Applied Linguistics in Language Teaching, 38, 175-194.

Andrade, M. S. (2006). International students in English-speaking universities: Adjustment factors. Journal of Research in International Education, 5(2), 131–154.

Brown, H. (2014). Contextual factors driving the growth of undergraduate English- medium instruction programmes at universities in Japan. The Asian Journal of Applied Linguistics, 1(1), 50–63. Retrieved from: [May 21, 2018].

Lee, J.-H. & Macaro, E. (2013). Investigating age in the use of L1 or English-only instruction: Vocabulary acquisition by Korean ESL learners. The Modern Language Journal, 97(4), 887-901.