"The four million Minangkabau living in West Sumatra consider themselves to be a matriarchal society. "While we in the West glorify male dominance and competition," Sanday says, "the Minangkabau glorify their mythical Queen Mother and cooperation." She reports that "males and females relate more like partners for the common good than like competitors ruled by egocentric self-interest," and that as with bonobo social groups, women's prestige increases with age and "accrues to those who promote good relations...."16"