Cumulative Record. Chapter 8: The Analysis of Behavior. Quote 22

An experimental situation is required in which frequency may be studied. When this is arranged, important processes in behavior are revealed in a continuous, orderly, and reproducible fashion. Concepts and laws derived from such data are immediately applicable to the behavior of the individual, and they permit us to move on to the interpretation of behavior in the world at large with the greatest possible speed. (p. 107)