After announcing in 2005 that bisexuality was merely an unproven theory, Northwestern University has doubled back and proven that — Eureka! — bisexual men actually exist. And it turns out that advancing bi-science was hard work.

Northwestern researchers took 100 men, divided more or less evenly between straights, gays, and bis. Unlike the 2005 study, this one recruited bis from bisexual specific websites and required that they had sex with both men and women and had been in a relationship for at least three months with someone of each gender. After the hard core selection process, everyone kicked back, relaxed and got down to business, which the New York Times describes thusly:

Men watched videos of male and female same-sex intimacy while genital sensors monitored their erectile responses. While the first study reported that the bisexuals generally resembled homosexuals in their responses, the new one finds that bisexual men responded to both the male and female videos, while gay and straight men in the study did not.

Lest you worry this was a huge waste of money and time, know that the study's lead author hopes it will "validate" men who "felt that scientists weren't getting them" due to the 2005 study. In other words, scientists have, after much effort, reversed a misconception that was stamped into the public consciousness by scientists. Someone should study whether "scientist" is even a real job where people actually do genuine productive things. A group of bisexuals, maybe.

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