Pavlov classically conditioned a dog to salivate at the sound of a tone. He then repeatedly paired the tone with another stimulus, a bell. Later, when he rang the bell the dog salivated, even though the bell had never been paired with food. This example illustrates higher order conditioning (second-order conditioning).

Question

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The statement accurately describes Pavlov's experiment and the concept of higher order conditioning.

Pavlov Classically Conditioned a Dog to Salivate at the Sound