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.
... under the age of 18 living with them, 70.4% are married couples living together, 9.9% have a female householder with no husband present, and 16.2% are non-families ...