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Jang, So Young & Lee, Sung Young. “Validation of a Survey Instrument for Grammar Learning Strategy of College Students.” Studies in English Language & Literature. 39.4 (2013): 253-277. The purpose of this study aims to validate a survey instrument for grammar learning strategy in English so as to develop a standard survey instrument. The survey consisted of 52 items with a 5-point Likert scale and was designed based on Oxford’s Strategy Inventory for Language Learning(SILL). The items were revised partly in order to reflect grammar learning process. Research was conducted with a total of 335 college students, and the data were analyzed using Rasch measurement model. The results were summarized in terms of two perspectives; validity and reliability of survey instrument. First, in terms of content validity, the study found the overall content validity adequate, and survey could measure unidimensional construct. In addition, it was found that the 5 point-scale was appropriate to elicit responses. However, some recommendations were made for improvement. Redundancy among items was found based on the analyses of fit statistics and point-biserial correlation. Second, the results showed that reliability of a survey instrument including both items and respondents was high based on the index of reliability. (Kunsan National University)