Sex therapist and researcher William H. Masters, who along with fellow researcher Virginia E. Johnson revolutionized the way Americans view sex, died Friday in Tucson, Ariz., The New York Times reports. He was 85 and had suffered from Parkinsons disease. The studies Masters and Johnson released beginning in the 1960s were often denounced because they did not condemn homosexuality. In their 1979 report Homosexuality in Perspective, Masters and Johnson reported that they had treated 84 gay men and women who wanted to better enjoy homosexual sex. When people criticized him for working with gay people, Masters responded that homosexuals are neither emotionally sick nor genetically defective.