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Classical conditioning occurs when a conditioned stimulus (CS) is paired with an unconditioned stimulus (US). Usually, the conditioned stimulus is a neutral stimulus (e.g., the sound of a tuning fork), the unconditioned stimulus is biologically potent (e.g., the taste of food) and the unconditioned response (UR) to the unconditioned stimulus is an unlearned reflex response (e.g., salivation).
Ivan Petrovich Pavlov (Russian: Иван Петрович Павлов, IPA: [ɪˈvan pʲɪˈtrovʲɪtɕ ˈpavləf] ⓘ; 26 September [O.S. 14 September] 1849 – 27 February 1936) [2] was a Russian and Soviet experimental neurologist and physiologist known for his discovery of classical conditioning through his experiments with dogs.
Ivan Pavlov's dog experiment is a well-known experiment that illustrates these terms. The unconditioned stimulus is the dog's food that would naturally cause salivation, which is an unconditioned response. Pavlov then trained the dog by ringing the bell every time before food.
The popular experiment is known as Pavlov's dogs where food was provided to the dogs along with repeated sounds of a bell; the food, which was the initial stimulus, would cause the dog to salivate. [6] The pairing of the bell with the food resulted in the former becoming the new stimulus even after the food was excluded from the pairing. [6]
Ivan Pavlov conducted multiple experiments investigating digestion in dogs in which neutral, unconditioned, and conditioned stimuli were used. In these experiments, the neutral stimulus was the sound of a bell ringing. This sound was presented to the dogs along with food, which acted as an unconditioned stimulus.
One of Pavlov's dogs with a surgically implanted cannula to measure salivation, Pavlov Museum, 2005. Ivan Pavlov's experiments with dogs and classical conditioning (1900s) John B. Watson and Rosalie Rayner conduct the Little Albert experiment showing evidence of classical conditioning (1920)
In Pavlov's original demonstration of classical conditioning, he used a backward conditioning arrangement as the control condition. Briefly, in that procedure, the dogs experienced the same number of US presentations (food) and the same number of CS presentations (metronome ticking) as the experimental groups, but the timing of the CS and US ...
Ivan Pavlov. The behavioristic approach to psychology reached its peak of popularity in the mid-twentieth century but still underlies much experimental research and clinical application. Its founders include such figures as Ivan Pavlov, John B. Watson, and B.F. Skinner. Pavlov's experimental study of the digestive system in dogs led to ...