اکرم بهرامی

Due to the vital role of critical thinking skills in students' educational and non-educational success, the present research attempted to examine the impact of critical thinking skills in TBSIR approach on the computer-based English expository essay writing of Iranian university students. Participants of this study included 30 students at Gonbad-e-Kavous and Hazrat-e-Masoumeh universities in Iran. They answered to the Watson-Glaser critical thinking skills test (1980), then after two weeks of reviewing TSR structure, they wrote a computer-based English expository essay as pre-test. After four weeks of learning TBSIR structure, they wrote another computer-based English expository essay as post-test. The paired samples t-test and Pearson correlation were run and the results revealed the impact of critical thinking skills in the TBSIR approach on the computer-based English expository essay writing of Iranian university students. Also, the results indicate the positive and significant correlation between critical thinking skills especially analysis and interpretation and the computer-based English expository essay writing of Iranian university students, which helps the students to promote their educational and social lives. Finally, teachers, teacher trainers, syllabus designers and materials developers can benefit from the results of this study.