Final answer:
Classical conditioning was first discovered by Pavlov in his research with dogs. In this type of learning, organisms associate events that repeatedly happen together. Pavlov's experiments involved ringing a bell whenever food was presented to a dog, which led the dog to associate the bell sound with the arrival of food.
Step-by-step explanation:
Classical conditioning was first discovered by Pavlov in his research with dogs. In classical conditioning, organisms learn to associate events that repeatedly happen together. Pavlov's famous experiments involved ringing a bell whenever food was presented to a dog, which eventually caused the dog to associate the bell sound with the arrival of food and produce saliva in response to the bell ringing.