Conditioned Reflexes

Shows Ivan Pavlov testing his theory of conditioned reflexes by observing the conditioned and unconditioned saliva flow in a dog, feeding fish conditioned to various hunger stimulants, educating a puppy to a meat diet, and observing a squirrel's response to danger. Distinguishes between blind instinct present in all animals from birth and reflex actions set up by conditioning to certain oft-repeated stimuli. Explains the process of checking reflexes and shows its application in the treatment of certain neuroses in human beings.