Departmental Bulletin Paper A Confirmatory Approach to the Structural Validity of Scores Generated by the Strategy Inventory for Language Learning (SILL)

Isemonger, Ian  ,  アイズマンガー, イアン

9pp.1 - 14 , 2016-03 , 熊本大学
The hypothesized factor structure for a Japanese-language version of the Strategy Inventory for Language Learning (SILL) authored by Oxford (1990) was examined in this study using Cronbach's alpha, and most importantly, confirmatory factor analysis (CFA). The results for alpha were arguably satisfactory on all but two scales. Alpha does not demonstrate unidimensionality of scores, which is critical to score interpretation, and therefore the results for the CFA, which indicated rejection of the hypothesized model, take precedence. Non-normal score distributions were also a significant property of the data generated by this Japanese translation of the SILL. It is argued that while these findings are for this particular Japanese translation of the SILL, other translations into Japanese or other languages should also be submitted to similar analyses as part of cumulative work into the validity of scores generated by this instrument, because its presence in the literature, and potentially in pedagogical practice, is significant.

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