Masahiro Yamada (sociologist)

Masahiro Yamada (山田 昌弘, Yamada Masahiro; born November 30, 1957) is a Japanese sociologist^[1] known for coining popular sociological terms like parasite singles and gap-widening society^[2] (格差社会, kakusa shakai). A graduate of University of Tokyo,^[1] he now teaches at Tokyo Gakugei University as professor.