Dual Attraction Understanding Bisexuality

"'Some people say everyone has the biological potential for bisexuality, but that's untestable,' says [Martin] Weinberg, who led one of the few major studies of bisexuals (published last year as 'Dual Attraction: Understanding Bisexuality'). 'The answer is, we don't know.' Weinberg conceives of bisexuality as often being an 'add-on'--we commonly develop one orientation first, usually straight, and then 'add on' an attraction to the other gender. 'Learning bisexuality,' he writes, is a matter of 'failing to unlearn the desirable aspects of one's own gender.'"Weinberg, Martin S. is the author of 'Dual Attraction Understanding Bisexuality', published 1995 under ISBN 9780195098419 and ISBN 0195098412.