The codes printed on your driving licence tell you what conditions you must meet to drive.he codes printed on your driving licence tell you what conditions you must meet to drive.
Ivan Pavlov was a Russian physiologist whose research on the physiology of digestion led to the development of the first experimental model of learning, Classical Conditioning. Most of his research was gathered studying salivating dogs.
One of Pavlov's dogs, preserved at The Pavlov Museum, Ryazan, Russia. The concept for which Pavlov is famous is the  conditioned reflex  (or in his own words the conditional reflex) he developed jointly with his assistant Ivan Filippovitch Tolochinov in 1901. He had come to learn this concept of conditioned reflex when examining the rates of salivations among dogs.