Diachronic sociolinguistic study of the new dialectalization of [s] sound.

本研究的目的是运用社会语言学中最近发展起来的新技术来阐明语言变化的过程。本研究的主题是在日本许多地区都能观察到的辅音[S]的变化，并对山形县山佐地区进行了时隔15年的追踪研究。结果表明，新的辩证法仍在进行中。过去方言中/se/“舍”的发音正在向“是”和“塞”两个方向转变。在可观察到类似现象的九州地区进行了相关研究，并出版了一本书，报道了辅音最近的变化[S]。这份报告涉及山形县四所高中十年间的两次调查。许多新的方言现象仍在进行中。S的发音变化尤其显示出一些有趣的现象。

The purpose of this study is to elucidate the process of language change in progress, applying new techniques developed recently in sociolinguistics. The main topic is the change of consonant [s] which is observable in many areas of Japan.A follow-up study was made in Yamazoe area in Yamagata Prefecture after 15 years' interval. The results showed that the new dialectization is still in progress. Old dialectal pronounciation for /se/ "she" is changing into two directions of "shi"and "se". Related research was executed in Kyushu area where a similar phenomenon is observable.A book was published as a report for recent change of the consonant [s]. The report is concerned with two surveys in ten years' interval in four high-schools in Yamagata Prefecture. Many new dialect phenomena was found still in progress. The change of [s] sound especially showed interesting phenomena.