However, sexuality does not always results in reproduction because it is a motivated behavior. The success in completing the sexual act depends on local excitation and psychic stimulus. Despite the fact that sexual behavior in humans is controlled and driven by one of the most primitive parts of our brain, at the same time it is strongly influenced and modulated by learned experience, as well as by the social, ethnic and cultural environment; making it an unique blend of the physiological and the psychological spheres. In addition, what is considered "normal" and "abnormal" in human sexual behavior is highly variable across cultures and times; and, as such, it has changed considerably in the Western societies in the last, permissive decades. (In book p56).
The impact of AIDS on Sexual Behavior, AIDS is a deadly and infectious disease that has mainly been transmitted through tainted blood products, sexual intercourse, and the sharing of needles by users of illegal injection drugs. With the safeguarding of the blood supply current transmission occurs. Among adolescents it is usually transmits through sexual intercourse or the sharing of needles with a HIV positive individual. The only means of restricting the spread of the disease is to have people adopt safer sexual and injecting drug use behaviors. On other hand, the long latency period of AIDS greatly complicates matters since infected people often are not aware that they are HIV positive and therefore pass the infection on to others. A number of studies have asked people whether they have changed their sexual behavior because of AIDS have taken steps to avoid AIDS. At that time these levels were commonly seen as indicating that people were either not informed about the risk of AIDS or were not reacting responsibly to the risk of AIDS. But the recent studies on sexual orientation, extra marital relations, and sexual abstinence. Indicate that, the number of people at risk was smaller than initially feared.
