Recent Issues. Chapter 11: A New Preface to Beyond Freedom and Dignity. Quote 5 Post author:B. F. Skinner Foundation Post published:March 20, 2019 Post category:Skinner's Quote of the Day “Both natural selection and operant conditioning have been slow to make their way as scientific explanations because they conflict with well-established views. Selection replaces purpose, for example.” (p. 115) (pp. 114-115) You Might Also Like Science and Human Behavior, Chapter 5: Operant Behavior, Quote 1 February 19, 2016 Reflections on Behaviorism and Society. Chapter 5: Walden Two Revisited. Quote 12 September 10, 2019 Contingencies of Reinforcement. Chapter 1: The Role of the Environment. Quote 5 January 16, 2018