Recent Issues. Chapter 12: The Behavior of Organisms at Fifty. Quote 15 Post author:B. F. Skinner Foundation Post published:April 19, 2019 Post category:Skinner's Quote of the Day “When a response was reinforced only in the presence of the light as an S Dee, the rat responded slowly in its absence (which, unfortunately, I called S Delta, hard to print) but responded immediately when the light came on.” (p. 127) You Might Also Like Contingencies of Reinforcement. Chapter 9: The inside story. Quote 1 September 5, 2018 Cumulative Record. Chapter 8: The Analysis of Behavior. Quote 8 April 11, 2022 Cumulative Record. Chapter 47: Baby in a Box. Quote 9 May 15, 2024