In 1980 Pamela Fishman conducted an experiment where in which she listened to up to 52 hours of conversations between couples. Most of the couples were feminists or supporters of the women's movement, were white and were between the ages of twenty five and thirty five. She was mainly focused on Women's use of tag questions such as "isn't it" or "should we". She also found that women often use the phrase "you know" as an attention seeking device in order to work out whether or not the person they are speaking to is actually listening. Fishman felt that women did this not because they were unsure but because men are mostly unresponsive towards them. Therefore it was their role to try and progress the conversation as the men would not attempt to. As a result of this she concluded that women do speak differently to men but this is not due to a lack of social skills but more the social position of women.