Ivan Pavlov (1849-1936)

Pavlov was a Russian biologist who was the first to make a scientific study of learning by association.
He worked with dogs and noticed how their saliva. began to run every time they were fed .
This was a normal reflex action-the dogs did not have to think about it.
Then Pavlov rang a bell every time the dogs were fed. After a while, he saw that the dogs' saliva began to run as soon as they heard the bell - even before the food arrived.
The dogs had learned to associate the sound of the bell with food.
Pavlov Called this type of reaction a conditioned reflex.


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