Editing Masters and Johnson (section)

==Sexual response in the aging person==
Masters and Johnson were the first to conduct research on the sexual responsiveness of older adults, finding that given a state of reasonably good health and the availability of an interested and interesting partner, there was no absolute age at which sexual abilities disappeared. While they noted that there were specific changes to the patterns of male and female sexual responses with aging – for example, it takes older men longer to become aroused and they typically require more direct genital stimulation, and the speed and amount of vaginal lubrication tends to diminish with age as well – they noted that many older men and women are perfectly capable of excitement and orgasm well into their seventies and beyond, a finding that has been confirmed in population-based epidemiological research on [[sexual function]] in the elderly.<ref>{{cite journal | last=Helgason | first=Asgeir | author-link=Asgeir Helgason |author2=Jan Adolfsson |author3=Paul Dickman |author4=Stefan Arver |author5=Mats Fredrikson |author6=Marianne Göthberg |author7=Gunnar Steineck | title=Sexual Desire, Erection, Orgasm and Ejaculatory Functions and Their Importance to Elderly Swedish Men: A Population-based Study | journal=Age and Ageing | volume=25 | issue=4 | pages=285–291 | year=1996 | doi= 10.1093/ageing/25.4.285 | pmid=8831873| doi-access=free }}</ref>