John T. Molloy once paid actors to go into bars and try to get women's phone numbers. One group of actors he asked to act confident. A second group of actors he asked to act arrogant. The actors asked to act arrogant were more successful. (Described in Molloy's 1975 book Dress for Success.)

Of course, as Alicorn says, the population of women who go to bars and talk to strange men might not be representative of all single women.