A study from 20 20 came out, which was covered quite widely in the media. The researchers used something called the penal plethismograph to measure aroused men. If they reacted to pornography that involved men and women, then they were classified as bi sexual. But i want you to take me much further back now and look t how we've understood it throughout history.
Bisexuality is the largest sexual minority in the world – but according to psychologist Dr Julia Shaw, it’s the least well understood. She talks to Madeleine Finlay about her new book, Bi, which challenges us to think more deeply about who we are and how we love. She discusses the history of trying to define and measure bisexuality, sexual behaviour in the animal kingdom, and how we can improve health outcomes for bi people.. Help support our independent journalism at
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