Science Daily reports:
Scholars at Brigham Young University and Princeton examined whether women speak less than men when a group collaborates to solve a problem. In most groups that they studied, the time that women spoke was significantly less than their proportional representation — amounting to less than 75 percent of the time that men spoke. […]
There is an exception to this rule of gender participation, however. The time inequality disappeared when researchers instructed participants to decide by a unanimous vote instead of majority rule.
Results showed that the consensus-building approach was particularly empowering for women who were outnumbered by men in their group. Study co-author Tali Mendelberg of Princeton says these findings apply to many different settings.