Virginia Johnson and her then-husband, William Masters, in 1972. They studied sexual behavior for decades. She died this week in St. Louis. Masters died in 2001. AP hide caption itoggle caption AP The Two-Way Reports: Virginia Johnson, Of 'Masters & Johnson' Fame, Dies July 25, 2013 With William Masters, she studied human sexual behavior. They spent decades trying to demystify sex and make it better for couples. Johnson was 88. Masters, who was her husband for more than 20 years, died in 2001.