 Despite the strong popularity of operationist behaviorism in certain quarters, it never commanded a complete consensus even in American psychology. Perhaps the most unexpected opposition came from Bridgman himself. Behaviorists were wanting to use operations to attain objectivity in psychology, which for them meant taking psychological discourse away from attempts to describe private experience. This was just the wrong move in Bridgman’s view, as we will see in more detail in Section 2.4 below. Bridgman engaged in some discussion with Stevens but discovered that the latter’s enthusiasm for “operational ideas” was really for something that he could not agree with. By 1936 he declared privately: “I have rather washed my hands of him” (quoted in Walter 1990, 184). Bridgman’s disagreement with B. F. Skinner (1904–1990) was even more severe, and resulted in a prolonged dispute between the two (Holton 2005; Walter 1990, 188–192). Operationism became a subject of great controversy in psychology, epitomized in a 1945 special issue of the Psychological Review devoted to a symposium on operationism suggested by Boring, who remained supportive of the movement at some critical distance.