- 2021 - 2025 Cross-linguistic comparison of interactional modality-Towards the construction of the theory of pragmatics of ba
- 2017 - 2023 日本人の英語発話モデルの構築-話ことばの日英対照研究を基に-
- 2015 - 2018 Construction of Pragmatics of Ba: A Cross-linguistics Analysis for Native Speaker's Point of View
- 2014 - 2018 Linguistics of 'Ba': Emergence of Meaning in Ba
- 2014 - 2017 Development of Ba theory related with Language and Communication: Strive toward Solution of Modern Society Problem
- 2011 - 2014 Co-creation of Socio-cultural Ba/field and Language Use: Construction of a Pragmatic Theory from Native Speakers' Point of View
- 2011 - 2013 Construction of Ba Theory related with Language and Comunnication:strive toward solution of modern society problem
- 2009 - 2011 Toward Construction of Linguistics of BA : Semantics and Pragmatics of BA
- 2008 - 2010 Towards Emancipatory Pragmatics: Discourse Analyses from Native Speaker's Perspectives
- 2006 - 2007 The Development of an Emancipatory Approach Concerning the Relationship Among Culture, Interaction, and Language
- 2005 - Emancipatory Pragmatics
- 2001 - 2002 A Theoretical and Empirical Study of the Relationship among Culture, Interaction and Language
- 1998 - 2000 A Fundamental and Empirical Study of the Influence of East Asian Cultures on the Grammaticalization Patterns of East Asian Languages
- 1998 - 2000 Reconstruction of universal model in language usage - from perspectives of Japanese and Chinese -
- 2000 - Culture, Interaction, Language
- 1990 - 1999 Typology of Pragmatic Principles
- 1996 - 1996 言語とコミュニケーションに関する学際的研究
- 1980 - 1995 Contrastive studies in Linguistic Politeness
- 1995 - Japanese and Japanese Culture
- 1993 - 1994 General study on the sociolinguistic basis of Japanese language education
- 1983 - 1983 女性の敬語の言語形式と機能
- 1982 - 1982 女性の敬語の言語形式と機能
- Culture, interaction and language in Asia: An Empirical and theoretical study
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Pragmatics Society of Japan
, 社会言語科学会
, International Pragmatics Association
, 日本言語学会