Sexual orientation is an enduring personal pattern of romantic attraction or sexual attraction (or a combination of these) to persons of the opposite...

between biology and sexual orientation is a subject of on-going research. While scientists do not know the exact cause of sexual orientation, they theorize...

sexual orientation is difficult for a variety of reasons, including the nature of the research questions. Most of the studies on sexual orientation rely...

identity. Sexual identity may also refer to sexual orientation identity, which is when people identify or dis-identify with a sexual orientation or choose...

relationship between the environment and sexual orientation is a subject of research. In the study of sexual orientation, some researchers distinguish environmental...

Ego-dystonic sexual orientation is a highly controversial mental health diagnosis that was included in the American Psychiatric Association's Diagnostic...

Homosexuality is a sexual attraction, romantic attraction, or sexual behavior between members of the same sex or gender. As a sexual orientation, homosexuality...

gender dysphoria. Like cisgender women, trans women may have any sexual orientation. Trans women face significant discrimination in many areas of life—including...

Sexual orientation discrimination (also known as sexualism) is discrimination based on a person's sex, sexual orientation, gender identity, or pregnancy...

romantic attraction, sexual attraction or sexual behavior between people of the opposite sex or gender. As a sexual orientation, heterosexuality is "an...