Recent Issues. Chapter 12: The Behavior of Organisms at Fifty. Quote 6 Post author:B. F. Skinner Foundation Post published:April 8, 2019 Post category:Skinner's Quote of the Day “Rate of responding has proved, in fact, to be a highly useful dependent variable. In a later paper I could report that it varied usefully over a range of at least 600 to 1.” (pp. 123-124) You Might Also Like About Behaviorism, Chapter 7: Thinking, Quote 13 May 29, 2017 Upon Further Reflection. Chapter 6: The Evolution of Verbal Behavior. Quote 9 June 11, 2020 Upon Further Reflection. Chapter 14:Some Thoughts about the Future. Quote 4 December 29, 2020