Ellis —A romanticist and a moralist —He attempted to free people from the fear of unnatural sex and fear of punishment and insensitive religiosity. Kinsey —In this perspective, people were starting to feel free to enjoy sex since contraception was starting to be more available. Buildup, orgasm, and after-effects of orgasm. Masters and Johnson —Energy buildup is divided into excitement and plateau, and energy is divided into orgasm and resolution. Pearsall's perspective is based on elective and long-term intimacy initializing from a reaction to fears such as AIDS and its health consequences. He has identified and then modified fourteen assumptions he says emerged from the first three perspectives and now fit his fourth perspective.