Theoretical Linguistics, Syntax, Generative Grammar, Tongan, Polynesian Languages, Austronesian Languages

Bilingualism and bilingual education, Multicultural education, Qualitative research, Sociocultural theory and Second Language Acquisition (SLA), Ethnolinguistic vitality, Language policy

American Studies, African American history and culture（Race and representation, History and memory of racial violence）

German as a Foreign Language, Intercultural Communication, Cultural Studies, Cultural Learning

Cross-cultural Media Analysis (Japan, Germany and the U.S.), Game Studies, German as a Foreign Language

Linguistics, Russian Linguistics, Applied Linguistics, Corpus Linguistics, Research on Russian Vocabulary Learning

Political Philosophy, Political Sociology

philosophy, intellectual history, literature, environmental studies

History of the French Revolution, Colonial History

Theoretical Linguistics, Lexical Semantics, German Linguistics

U.S. History, Pacific Islands Studies, Asian American Studies, History of War and Militarism, Gender Studies

Area Studies (Brazil), Community Education in impoverished regions in Brazil

Latin American Economy, Latin American Economists' Thoughts on Development

German as a Foreign Language

Shakespeare, Elizabethan Drama, English Literature

Contrastive Linguistics

Spanish History

Migration Studies, Visual Anthropology, Gender and Asian Studies

Film Production, Creativity Studies, Art and Regional Revitalization, Sado Island Studies

travel writing, British eighteenth / nineteenth century literature, representations of Japan, postcolonial theory