When Julie's father comes home from work he opens the front door and picks her up to give her a big hug. Before long, Julie starts smiling whenever she hears her father turn his key to open the door. In this situation, Julie's smiling at the sound of her father's key turning in the door is a(n) _____; the hugging is a(n) _____.
a. unconditioned stimulus; conditioned response
b. unconditioned response; conditioned stimulus
c. conditioned stimulus; unconditional response
d. conditioned response; unconditional stimulus
Question 2
Ivan Pavlov conducted a series of studies that led him to propose his theory of classical conditioning. In these studies, Pavlov observed how a dog learned to:
a. Bark when meat was presented
b. Bark when meat was taken away
c. Wake up when an auditory stimulus (e.g., a bell) was presented
d. Salivate to a simple stimulus such as a light or bell
The Western Front, 1918
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