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 Science and Human Behavior, Chapter 14: The Analysis of Complex Cases, Quote 8 August 18, 2016 Upon Further Reflection. Chapter 6: The Evolution of Verbal Behavior. Quote 3 June 3, 2020 About Behaviorism, Chapter 7: Thinking, Quote 6 May 18, 2017