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...

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

A relationship between handedness and sexual orientation has been suggested by a number of researchers, who report that heterosexual individuals are somewhat...

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...

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...

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

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

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

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

portmanteau of gay and radar) is a colloquialism referring to the intuitive ability of a person to assess others' sexual orientations as homosexual, bisexual...

Biology and sexual orientation Environment and sexual orientation Fraternal birth order and male sexual orientation Handedness and sexual orientation...

Animals portal Pre-copulatory isolation mechanisms in animals Biology and sexual orientation Green Porno, a series of short films about animal mating, enacted...

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

sexual orientation Environment and sexual orientation Biology and sexual orientation Neuroscience and sexual orientation Prenatal hormones and sexual...

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

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

the sexual orientation of the victim, making it difficult to study the prevalence in WSW communities. LGBTQ portal Biology and sexual orientation Ego-dystonic...

directing behavior, is believed to play a role in romantic love. Biology and sexual orientation Interpersonal attraction Religious views on love Neuroanatomy...

portal Biology and sexual orientation Environment and sexual orientation Homosexuality and psychology International Federation for Therapeutic and Counseling...

heterosexual and homosexual attraction. Bisexuality is one of the three main classifications of sexual orientation along with heterosexuality and homosexuality...

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

Biastophilia Biblical courtship Bidder's organ Bikini waxing Biology and sexual orientation Birth control Birth Control (film) Birth Control Council of...

sexualities, romantic orientations, and gender identities which are not heterosexual or cisgender. In the 1990s, gay, lesbian, and bisexual activists adopted...

Sexual diversity or gender and sexual diversity (GSD), refers to all the diversities of sex characteristics, sexual orientations and gender identities...

gender and sex are not determining factors in their romantic or sexual attraction to others. Pansexuality is sometimes considered a sexual orientation in...

Sexual Preference: Its Development in Men and Women (1981) is a book about the development of sexual orientation by the psychologist Alan P. Bell and...

biology, medicine, psychology, epidemiology, sociology, and criminology. Topics of study include sexual development (puberty), sexual orientation, gender...

geneticist, author, and filmmaker. He is known for his research on the role of genetics in sexual orientation and for a series of popular books and films that...

subjective measure dependent on another person's interest, perception, and sexual orientation. For example, a gay or lesbian person would typically find a person...