Mitsuyo Sakamoto is a Professor in the Department of English Studies as well as Graduate School of Languages and Linguistics at Sophia University in Tokyo, Japan. She is a sociolinguist interested in how social settings enhance and inhibit bilingualism, and has been doing fieldwork in Japan, Canada, and Brazil. Currently she is working on a government-funded five-year project that addresses the need for effective majority education in establishing a pluralistic nation. She teaches minority language education, language and power, and critical applied linguistics. Her recent English publications include Ethnolinguistic vitality among Japanese-Brazilians: Challenges and possibilities and Moving towards effective English language teaching in Japan: Issues and challenges. She received a Ph.D. in second language and multicultural education from University of Toronto, Canada.