Comprehensive Research on Acquisition of Japanese as a Second Language

1. 口语水平访谈获得的材料数据库（最终版本）已按计划完成，并正在向公众提供，用于二语习得研究。除了上述OPI数据库之外，每个机构的项目成员还单独收集了纵向和横断面数据，这些数据与OPI数据一起证明是极有价值的。上述数据的调查结果已在海外和日本的会议上发表或发表。研究课题涉及多个领域，在质量和数量上都很突出。它们是语音学、音系学、书写系统、语法、语篇、主题写作、社会语言学和外来词。本课题无疑提高了日语作为第二语言习得研究的质量和范围，无论是横向研究还是纵向研究，理论建构还是假设验证。然而，我们一直无法将我们的习得研究扩展到诸如语用能力、社会语言能力和社会文化知识等领域。我们也无法根据这个研究项目的结果提出一个全面的收购模型或理论。因此，在接下来的研究中，我们希望构建这样一个全面的模型/理论，通过准确描述习得过程，解释第一语言迁移，探索第二语言习得中的共性来解释日语习得。在三年的时间里，我们选择了5.20篇论文发表在报告中（404页），并分发给学术和研究机构以及个人研究者。

1. The database (final version) of the materials obtained by Oral Proficiency Interview has been completed as planned, and is being offered to the public for L2 acquisition research.2. In addition to the above OPI database, members of the project at each institution have individually collected longitudinal and cross-sectional data which, together with the OPI data, have proved to be extremely valuable.3. The results of the investigation of the data above have been published or presented at conferences overseas as well as in Japan. The research topics cover many areas and stand out both in terms of quality and number. They are phonetics, phonology, writing system, grammar, discourse, theme writing, socio-linguistics, and loan words. This project has undoubtedly improved the quality as well as the scope of the research on acquisition of Japanese as a Second Language, both cross-sectional and longitudinal, theory construction and verification of hypotheses.4. However, we have been unable to expand our acquisition research into such areas as pragmatic competence, socio-linguistic ability, and socio-cultural knowledge. Neither have we been able to posit a comprehensive acquisition model or theory based on the results of this research project. Therefore, in the study to be continued we would like to construct such a comprehensive model/theory that explains acquisition of Japanese by accurately describing the process of acquisition, explicating the first language transfer, and exploring universals in second language acquisition.5.20 papers written in the three year period were selected and printed in the Report(404 pages) and distributed to academic and research institutes and individual researchers.