Recent Issues. Chapter 10: Laurence Smith’s Behaviorism and Logical Positivism. Quote 2 Post author:B. F. Skinner Foundation Post published:March 11, 2019 Post category:Skinner's Quote of the Day “I preferred radical behaviorism, which accepted the existence of private states, but as states of the body, the study of which should be left to physiology.” (p. 110) You Might Also Like Recent Issues. Chapter 11: A New Preface to Beyond Freedom and Dignity. Quote 3 March 18, 2019 Science and Human Behavior, Chapter 20: Personal Control, Quote 11 December 21, 2016 Science and Human Behavior, Chapter 19: Social Behavior, Quote 2 November 29, 2016