In Aldous Huxley's Brave New World, infants develop a fear of books after books are repeatedly presented with a loud noise. In this fictional example, the loud noise is option c unconditioned stimulus.
The unconditioned stimulus causes an automatic response. It has been used in the experiment of Classical Conditioning by Russian psychologist Ivan Pavlov and the Little Albert experiment by behaviorist John Watson and Rosalie Reyner. Pavlov experimented with dogs and food. He and his associates tested that dogs salivated more at the sight of edible items in comparison to non-edible items. Here food was the unconditioned stimulus that triggered the response of salivation in dogs.
In the Little Albert experiment, a nine-month-old infant Albert was introduced to a rat, a monkey, burning newspapers, and a mask. The infant did not react. In the next round, he was again introduced to a rat with a loud noise. After this, he reacted with fear whenever he was exposed to a white rat. In this case, the noise was an unconditioned stimulus.
Therefore infants develop a fear of books after they are repeatedly presented with noise. Here noise is the unconditioned stimulus.
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