Name _________________________________________________
Psychology Homework
Classical Conditioning
Directions: Identify the unconditioned stimulus, conditioned stimulus, and conditioned response for
each of the situations below. (2 points per blank)
1. Every time someone flushes a toilet in the apartment building, the shower becomes very hot
and causes the person to jump back. Over time, the person begins to jump back automatically
after hearing the flush, before the water temperature changes.
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
2. You eat a new food and then get sick because of the flu. You develop a dislike for the food and
feel nauseated whenever you smell it.
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
3. An individual receives frequent injections of drugs, which are administered in a small
examination room at a clinic. The drug causes increase in one’s heart rate. After several trips to
the clinic for the shot, the next time the patient is in the examination room, his heart rate
increases (even before getting the shot).
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
4. You repeatedly hear a tone just before having a puff of air directed to your eye which causes
you to blink. Eventually, you begin to blink to the sound of the tone only.
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
5. Someone is robbed just outside his/her apartment and decides to move because the sight of the
apartment causes him/her to feel anxious.
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
6. People who receive chemotherapy often vomit during or soon after the procedure. After
several chemotherapy sessions, a patient begins to feel nausea at the sight of the chemotherapy
treatment room (before getting any treatment).
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
7. After being bitten by a dog, someone experiences fear at the sight of any dog.
Unconditioned stimulus (UCS) ____________________________________________________
Conditioned stimulus (CS)
____________________________________________________
Conditioned response (CR)
____________________________________________________
What other principle of learning is evident in this situation?
______________________________________________________________________________
What term would you use to refer to how the person may begin not to experience fear when
they saw other dogs because they did not bite him?
______________________________________________________________________________
What principle would be evident if the person was only afraid of the breed of dog that originally
bit him?
______________________________________________________________________________