Classical conditioning in Pavlov's study
1. Pavlov paired the ringing of a bell with the arrival of dog food
2. The ringing of a bell was a neutral stimulus (it did not naturally produce salivation in the dogs) while the food was an unconditioned (innate) stimulus which naturally resulted in salivation
3. Through pairing of these stimuli, a conditioned response was formed
4. The bell became a conditioned stimulus - producing a conditioned response of salivation, even in the absence of the unconditioned stimulus, the food