1. Ivan Pavlov was a Russian scientist conducted experiments on conditioned reflexes.
2. He discovered that dogs produced extra saliva when they were offered food.
3. Pavlov noticed, that they also did the same when the person who fed them came into the room, even if the person had not brought any food.
4. Pavlov went on to ring a bell at the start of feeding time, and eventually the dogs produced extra saliva when they heard the bell, before any food was brought.
5. A dog salivating when it hears a bell is not a natural response.
6. They would not do this without being conditioned to do so.
7. The behaviour has been learned. It is called a conditioned response.
