This pilot study, part of the researcher’s thesis, aims at testing and applying the necessary modifications to the PA’ and PGA’s procedures and ensuring the do ability of the intervention. Moreover, pilot-testing provides the opportunity to evaluate the validity and reliability of the research instruments. The sample of the pilot students comprises two groups: Process Approach (PA) class and Process-Genre Approach (PGA) class for the experimental groups. It was conducted in two classes of one university in Pekanbaru-Riau. Four research instruments were tried out: essay writing test, questionnaire, interview, and observation. The process of constructing each of the four instruments as well as setting up their validity and reliability are discussed throughout the paper
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