“…Furthermore, many studies have generally supported Lakoff's (1975) hypothesis that women are politer (i.e., hearer oriented) than men (e.g., Bodine, 1975;Ervin-Tripp, 2001;Fox, Bukatko, Hallahan, & Crawford, 2007;Hannah & Murachver, 2007;Jenkins & Aube, 2002;McMillan, Clifton, McGrath, & Gale, 1977;Mulac, Bradac, & Gibbons, 2001;Tannen, 1990). Several empirical studies with a particular focus on speech styles by native Japanese speakers also have provided general support for Lakoff's hypothesis (e.g., Ide, 1982;Itakura & Tsui, 2004;Lauwereyns, 2002;Tamaoka, Lim, Miyaoka, & Kiyama, 2010;Uchida, 1997;Usami, 2002). It suggests that gender (G) may also be an influential factor in addition to the three factors assumed by Brown and Levinson.…”