ByRonald C. Fox
Pages 6

The continued pursuit and publication of research on bisexuality in this first decade of the twenty-first century has grown out of several previous waves of theory and research on homosexuality and bisexuality. The concept of bisexuality, introduced into classical psychoanalytic theory in the 1890s and early 1900s, was used as a way of understanding evolutionary theory, developmental aspects of human sexuality, the balance of masculinity and femininity in the individual, and adult homosexuality (Angelides, 2001; Fox, 1996). From the 1940s through the early 1970s, post-Freudians rejected the bisexuality as a useful theoretical concept or descriptive term and instead viewed homosexuality and bisexuality as examples of individual and family psychopathology and arrested psycho-sexual development (Bieber et al., 1962; Rado, 1940; Socarides, 1978).