Adults. Sexual intercourse may be for reproductive, relational, or recreational purposes. It often plays a strong role in human bonding.
Am J Epidemiol. Apr 15;(8) Young age at first sexual intercourse and sexually transmitted infections in adolescents and young adults. Kaestle.
Age at first intercourse and subsequent sexual partnering among adult women in the United States, a cross-sectional study. Brianna M.
Sexual Intercourse Amongst Mozambican Adults: Reversal Theory Based Inventory of Motives. Authors; Authors and affiliations. Germano Vera.