Pavlov's model of classical conditioning was based on the idea that the conditioned stimulus, through its association close in time with the unconditioned stimulus, came to activate the same place in the animal's brain that was originally activated by the unconditioned stimulus. this was known as: higher-order conditioning the cognitive perspective the skinner model stimulus substitution stimulus discrimination

higher-order conditioning

Explanation:

Pavlov found that a conditioned stimulus with a neutral (unconditioned stimulus ) associated, the dogs will experience the same previous salivation. First food was provided at the same time a bell ring, then the removal of the food, which was a natural trigger to making the dogs salivate was not present, still when ringing the bell, the dogs would act as if they were in front of the food.

This also called Higher Order Conditioning was the cornerstone of Pavlov findings.

The image shows the experiment:

because it travels in smaller waves then all other colors, causing it to be the most visible color