The historical study on the diversity of the language ideologies in the modern era of Japan from the viewpoint of linguistic purism.

根据托马斯对语言纯粹主义的分类，本研究首先认为日本文部省国家语言研究委员会在明治时期推行的语言政策是受一战前以帝国语言政策为导向的欧洲改良主义纯粹主义的强烈影响。其次，本研究还将柳田邦夫在大寿时代后的民俗运动中所涉及的语言意识形态等同于第一次世界大战后新独立的民族国家的欧洲民族学纯粹主义运动。此外，在寿娃时代开始后，学校的标准语言教育大幅瓦解，最终导致了在所谓的故土教育框架内将地区方言作为象征性材料对待。这项研究得出的结论是，上述关于战前日本民族语言应该是什么的态度的变化，最终为共同语言政策的到来做了准备。在战后时代。

Based on the categorization of the linguistic purism by G. Thomas, this study first considered the language policy in the Meiji era implemented by the national language research committee of the ministry of education as the one strongly influenced by the European reformist purism oriented to the imperial nation's language policy before the First World War. Next, this study also equated the language ideology involved in the folklore movement by Yanagita Kunio after Taishou era with the European ethnological purism movement of the newly independent nation-states after the First World War. Further, after the beginning of the Shouwa era, the substantial break-up of the standard language education in school resulted after all in the treatment of regional dialects as symbolic materials in the framework of so-called home-land education. This study came to the conclusion that these changing attitudes on what the national language of Japan should be in the pre-war era mentioned above, eventually made preparations for the advent of common language policy. in post-war era.