Heterosexuality is a sexual orientation characterized by romantic love or sexual desire exclusively for members of the opposite sex or gender, contrasted with homosexuality and distinguished from bisexuality and asexuality.
In addition to referring to a sexual orientation, the term heterosexuality or heterosexual may also refer to sexual behavior or sexual activities between people of the opposite sex, regardless of sexual orientation.
Heterosexualism is sometimes used as a synonym for heterosexuality (that is, a sexual orientation or behavior). However, heterosexualism (not heterosexuality) is also used in a different sense, to refer to heterosexism (the idea that heterosexuality is superior or normal).
__Definition__
Hetero- comes from the Greek word heteros, meaning "different" (for other uses, see heterozygote, heterogeneous), and the Latin for sex (that is, physical sexual differentiation). The term "heterosexual" was coined shortly after and opposite to the word "homosexual" by Karl Maria Kertbeny in the 1860s. "Heterosexual" was first listed in Merriam-Websters's New International Dictionary as a medical term for "morbid sexual passion for one of the opposite sex", but in 1934 in their Second Edition Unabridged it is a "manifestation of sexual passion for one of the opposite sex; normal sexuality". (Katz, 1995)
__Psychological factors relating to sexuality__
Main article: Causes of sexual orientation
A broad array of opinion holds that much human behavior ultimately is explainable in terms of natural selection. From this point of view, the reason why humanity as a whole exhibits a strong statistical tendency towards heterosexuality is that heterosexual intercourse has the potential for producing offspring and homosexual intercourse does not.
In traditional societies individuals are often under heavy social pressure to marry and have children, irrespective of their sexual orientation. On the other hand many homosexuals wish for children, and some have found a way to procreate in spite of their sexual preference, generally through artificial or natural insemitation.
Sexual orientation and its causes have been the subject of much attention and research. However, research on sexual orientation has not usually focused on the causes of heterosexuality. This is largely because heterosexuality is viewed by social conservatives and traditionalists as normal and non-heterosexuality as deviant, particularly in less developed countries. Some social liberals, sometimes influenced by Kinsey's disputed theories, regard sexuality as fluid and as covering a range. Any attempt at understanding the causes of sexual attraction will be more successful if the mechanisms that underlie sexual attraction are understood.
Not all people who are attracted or have sexual relationships with members of the opposite sex identify themselves as heterosexual: people who do not identify primarily as heterosexual may sometimes engage in heterosexual behaviour. Similarly, some people frequently have sex with members of the same sex yet still see themselves as heterosexual.
According to American Psychiatric Association (APA), there are numerous theories about the origins of a person's sexual orientation, but some believe that "sexual orientation is most likely the result of a complex interaction of environmental, cognitive and biological factors", and that genetic factors, play a "significant role" in determining a person's sexuality.5 The APA currently officially states that sexual orientation is not chosen and cannot be changed, a radical reversal from the recent past, when non-normative sexuality was considered a deviancy or mental ailment treatable through institutionalization or other radical means.
__Slang__
The term "straight" is an ordinary (nontechnical) English word used to describe a heterosexual person, although the term appears to have originally derived from mid-20th century gay slang, ultimately coming from the phrase "to go straight" (as in "straight and narrow"), or stop being gay. One of the first uses of the word in this way was in 1941 by author G. W. Henry. Henry's book concerned conversations with homosexual males and used this term in connection with the reference to ex-gays. Though not originally intended to refer to heterosexuals, like the meanings of many words, its primary usage has changed over time.Select The Materials Fashion Style, Nb Balance Shoes, Balance Footwear, Sneakers Balance Quality Assurance