The sex researchersWilliam Howell Masters (1915-2001) and Virginia Eshelman Johnson (1925- ) conducted laboratory observations of and experiments into human sexual behavior during the 1950s and 1960s.
Their most famous publications were Human Sexual Response and Human Sexual Inadequacy.
... them, 62.2% are married couples living together, 17.0% have a female householder with no husband present, and 15.9% are non-families. 13.0% of all households are made up ...