Animal Behavi13 - Animal Behavior: Learning Classical...

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Animal Behavior: Learning Classical Conditioning In 1902, the Russian physiologist, Ivan Pavlov, began his famous experiments on conditioning. Pavlov repeatedly presented a dog with food following the ringing of a bell. When the bell sounded without the presentation of food, the dog would still respond to the bell as if it were food. Pavlov collected the dogs' saliva and found that the amount of saliva produced by bell ringing increased as the dogs were more frequently exposed to the coupling of food presentation and bell ringing. The dog had learned to associate the sound of the bell with food. Pavlov called the food an unconditional stimulus, or UCS, because the dog's normal reaction would be to salivate at the presentation of food. The bell he termed the conditional stimulus, or CS, because response to the bell was conditional upon the association between the bell and food. For the same reasons, salivation in response to food was labeled the unconditional response, or UCR, while salivation in response to the bell was called the conditional response, or CR. Conditioning the
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This note was uploaded on 01/27/2012 for the course BIOLOGY BSC1005 taught by Professor Rodriguez during the Winter '09 term at Broward College.

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