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

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

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...

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...

Homosexuality is 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 fluidity is one or more changes in sexuality or sexual identity (sometimes known as sexual orientation identity). Sexual orientation is stable...

reproductive functions, including the human sexual response cycle. Someone's sexual orientation is their pattern of sexual interest in the opposite and/or same...

attraction. Bisexuality is one of the three main classifications of sexual orientation along with heterosexuality and homosexuality, all of which exist on...

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

The relationship between Buddhism and sexual orientation varies by tradition and teacher. According to some scholars, early Buddhism appears to have placed...

the lack of sexual attraction to others, or low or absent interest in or desire for sexual activity. It may be considered a sexual orientation or the lack...

pseudoscientific practice of attempting to change an individual's sexual orientation, romantic orientation, gender identity, or gender expression to align with heterosexual...

the sexual orientation that emerges later in the individual. Prenatal hormones may be seen as the primary determinant of adult sexual orientation, or...

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

known as the older brother effect, has been correlated with male sexual orientation, with a significant volume of research finding that the more older...

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

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

used alongside the term "sexual orientation", as well as being used alternatively to it, based upon the perspective that sexual attraction is only a single...

Sexual activities involving men who have sex with men (MSM), regardless of their sexual orientation or sexual identity, can include anal sex, non-penetrative...

determining factors in their romantic or sexual attraction to others. Pansexuality is sometimes considered a sexual orientation in its own right or, at other times...

man or a woman irrespective of their sexual orientation. LGB issues can be seen as a matter of sexual orientation or attraction. These distinctions have...

Scales of sexual orientation are classification schemes of different sexual orientations. Definitions of the term sexual orientation normally include two...

A mixed-orientation marriage is a marriage between partners of differing sexual orientations. The broader term is mixed-orientation relationship, sometimes...

bodies had not discussed LGBT rights (regarding equality regardless of sexual orientation or gender identity) until 1994 through the favorable resolution of...

to their sex assigned at birth. Within the transgender community, sexual orientation terms based on gender identity are the most common, and these terms...

referring to the intuitive ability of a person to assess others' sexual orientations as homosexual, bisexual or straight. Gaydar relies on verbal and...

The Klein Sexual Orientation Grid (KSOG) developed by Fritz Klein attempts to measure sexual orientation by expanding upon the earlier Kinsey scale. Fritz...

denominations have a variety of beliefs about sexual orientation, including beliefs about same-sex sexual practices and asexuality. Denominations differ...