The conditioned reflex was discovered in the following experiment on a dog. A bell rung just before a dog was fed; the dog salivated on receiving its food. After repeated trials, the dog would salivate whenever the bell sounded, even if no meat powder was being presented.

The dog salivated in response to the bell ring. Pavlov decided that the food was an un

conditioned stimulus, the salivation in response to the food was an unconditioned reflex,while the sound of the bell was the conditioned stimulus. Only the salivation to stimulus of the bell alone was the conditioned reflex. More than that, Pavlov found that the conditioned reflex was formed easier when the unconditioned stimulus followed the conditioned one;the conditioned reflex was formed easier, if the conditioned stimulus occurred very close in time to the unconditioned stimulus, if the bell louder, or if the dog was trained on larger pieces of meat the amount of salivation would be larger.

The reflex concept had a tremendous influence on the process of psychological thinking. It also caused an enormous spate of research in the psychology of behavior in the early 20 century. Through the conditioned reflex the stu

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Approximate Word count = 557
Approximate Pages = 2 (250 words per page double spaced)