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Ivan Petrovich Pavlov (1849-1936), world famous Russian physiologist became second to Freud as the most influential psychologist of our century. Pavlov was a follower of "The father of Russian psychology," Sechenov, whose theory was that the reflex is the essence ....

Middle of Essay
.... 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. This discovery was very important because the conditioned reflex was basic to the understanding of the mechanism of change in human and animal behavior.Thus scientists came to understand that behavior is no longer limited by a fixed, inherited reflex, but can be modi ....