Contingencies of Reinforcement. Chapter 5: Operant behavior. Quote 21 Post author:B. F. Skinner Foundation Post published:June 12, 2018 Post category:Skinner's Quote of the Day “An operant is a class, of which a response is an instance or member.” (p. 131) Subscribe to RSS feed here You Might Also Like Upon Further Reflection. Chapter 4: Selection by Consequences Quote 9 April 29, 2020 About Behaviorism, Chapter 10: The Inner World of Motivation and Emotion, Quote 1 June 21, 2017 Science and Human Behavior, Chapter 11: Aversion, avoidance, anxiety, Quote 5 June 29, 2016