The present study aims to investigate Japanese language learners' motivation and their future Japanese self-images from the perspective of dialogical theory (Bakhtin, 1981, 1986). Bakhtin assumes that any use of language is dialogue between self and other, or mind and world, and that it is through the acquisition of speech genres of a language historically shared in society that various types of self emerge. Through the analysis of interview data obtained from two Japanese-as-a-second-language learners, the present study illustrates how their study of the language is motivated by their desire to engage in dialogue with others, present or imagined, who speak the language. By focusing on speech genres as mediation between self and other, it also shows how an individual future Japanese self-image is connected to the social practices of the Japanese-speaking community through the medium of the speech genres. Based on these findings, the present study argues that Bakhtin's concept of speech genres provides a framework for analyzing complex interactions between the individual learner's motivation, self and the socio-historical context, and thus, has the potential to expand the conceptual basis of language learning motivation studies.

本研究旨在从对话理论的角度研究日语学习者的动机及其未来的日语自我形象（Bakhtin，1981，1986）。巴赫金（Bakhtin）认为，对语言的任何使用都是自我与他人，思想与世界之间的对话，并且是通过获取语音体裁来进行的在社会上历史上共享的一种语言，它会出现各种类型的自我。通过对两个日语作为第二语言的学习者的访谈数据的分析，本研究说明了他们对与讲英语的其他人（现在或想象中的）进行对话的愿望是如何激发他们对语言的学习的。通过着眼于作为自己与他人之间的中介的言语体裁，它还展示了未来个人的日本自我形象如何通过言语体裁与日语社区的社会实践相联系。基于这些发现，本研究认为巴赫金的言语体裁概念为分析个体学习者的动机，自我与社会历史情境之间的复杂相互作用提供了一个框架，因此，