Check your understanding of classical conditioning by trying to identify the unconditioned stimulus (US), unconditioned response (UR), conditioned stimulus (CS), and conditioned response (CR) in each of the examples below. Fill in the diagram accompanying each example. You'll find the answers in Appendix A.
Sam is 3 years old. One night, his parents build a roaring fire in the family room fireplace. The fire spits out a large ember that hits Sam in the arm, giving him a nasty burn that hurts a great deal for several hours. A week later, when Sam's parents light another fire in the fireplace, Sam becomes upset and fearful, crying and running from the room.