Bisexuality. It's an ambiguous label. Its meaning is highly debated among critics in both straight and gay communities. Some have called bisexuality a transition phase between being straight and gay. Others say it is simply an indication of a person's sexual confusion. And then there is the phrase coined by some members of the homosexual population: "You are either gay, straight or lying."
Despite these skepticisms, studies reveal millions of men and women in the United States identify themselves as being bisexual.
In 1948, IU sex researcher Alfred C. Kinsey conducted studies using a "sexual continuum" to conclude that the majority of American males are bisexual to some extent. A 2002 survey from the Centers for Disease Control and Prevention found 1.8 percent of adult males ages 18 to 44 identify themselves as bisexual.
People identify themselves with specific sexual identities for many different reasons, such as behavior, desire and emotion. Last summer, a group of psychologists published a study that looked at only one specific aspect: sexual arousal patterns in bisexual men. The study's results have cast even more doubt on whether, as far as physical arousal is concerned, true bisexuality exists in men.
http://www.idsnews.com/story.php?id=32037