Human sexual development.

Empirical research by scholars from several disciplines provides the basis for an outline of the process of sexual development. The process of achieving sexual maturity begins at conception and ends at death. It is influenced by biological maturation/aging, by progression through the socially-defined stages of childhood, adolescence, adulthood, and later life, and by the person s relationships with others, including family members, intimate partners, and friends. These forces shape the person's gender and sexual identities, sexual attitudes and sexual behavior. Adults display their sexuality in a variety of lifestyles, with heterosexual marriage being the most common. This diversity contributes to the vitality of society. Although changes in sexual functioning in later life are common, sexual interest and desire may continue until death.