Portfolio Assessment s Impact on Writing Ability of English Foreign Language Efl Learners
This study deals with two objectives: to investigate portfolio assessment's impact on EFL learners' writing ability as well as to figure out portfolio assessment's effects on the students' writing ability in terms of focus, elaboration, organization, conventions, and vocabulary. The subjects taken are 4F as the experimental class and 4G as the control class. To derive all data, students should make out some writings during treatment period. Then, they picked their three best writings for final evaluation/post test. Then, from all data recorded, it was concluded that portfolio assessment provided positive impacts on students' writing ability. It was clearly seen from student's writing ability of the experimental class that was better than before. The pre test mean score of the experimental group was 67.19 and the post test mean score was 80.65. This implied the enhancement score for the experimental class after getting treatment was 13.46 points. On the contrary, the result of students' writing score of control class did not increase significantly. The pre test mean score of control class was 68.13 and the post test score was 73.42. Then, as the students' writing ability of experimental group increased, their writing ability in terms of focus, elaboration, organization, conventions, and vocabulary also improved significantly. However, unlike the experimental group, the control group students' writing ability in terms focus, elaboration, organization, conventions, and vocabulary did not increase. Even, there were two aspects came to degradation. To add, there was significant difference of students' writing ability between experimental and control class. I got that the t test value for students' writing score was 5.268. It means that t0 ttable. As a result, the positive impact offered by portfolio assessment on students' writing ability cannot be doubted anymore. Considering the findings, some suggestions are offered here. First, the lecturer should implement portfolio in teaching writing. Second, the students should have more practice in writing and do not easily surrender to achieve good result through writing process.