As part of the ongoing collaborative research project "Exploring Variation in Contemporary Japanese: Multiple Approaches", we conducted a nationwide survey on dialect consciousness in December 2010. This paper reviews two recent outcomes based on the survey, each examining the regional typology of language usage by statistical methods. Tanaka(2011a, 2011b) adopted 'cluster analysis' to the survey data and yielded two major regional types and six subsidiary types. Tanaka and Maeda(2012) adopted 'latent class analysis' to the same data in order to derive the individual-level probabilistic clustering of language usage and yielded five latent classes which can be conceived as follows: Class 1 Active Dialect Speaker, Class 2 Common Language Speaker, Class 3 Moderate Code Switcher, Class 4 Active Code Switcher, and Class 5 Indecisive Respondent. The result first made it possible to practice regional typology based on individual-level clustering of dialect usage.
〈共同研究プロジェクト紹介〉多角的アプローチによる現代日本語の動態の解明 方言意識の現在をとらえる : 「2010年全国方言意識調査」と統計分析
review030104.pdf
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運用指針、オープンアクセス方針、等
