Reactions to issues concerning sexual orientations, identities, preferences, and choices.

Most etiological theories of homosexuality suffer from unomania, the preoccupation with single causes. Unomania, in MacDonald's terms, reflects a singularistic, as compared with a pluralistic cognitive set. It also reflects the rigid dichotomization of feminine roles for females and masculine roles for males. It is hoped that current research on bisexuality will be spared the unomania that has afflicted research on homosexuality.