A researcher conducts an experiment where a dog is repeatedly presented with a specific tone immediately before receiving a food reward. After several pairings, the dog begins to salivate merely upon hearing the tone, even without the food being present. In this classical conditioning scenario, what term best describes the food reward before the dog learned to associate it with the tone?
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The answer
Correct answer: C. It is the unconditioned stimulus, which naturally and automatically triggers salivation.
Tested concept: Classical conditioning (Pavlov)
Explanation
In classical conditioning, the unconditioned stimulus (US) is any stimulus that naturally and automatically triggers a response without any prior learning. In this experiment, the food reward naturally causes the dog to salivate, making it the unconditioned stimulus. The unconditioned response (UR) would be the salivation to the food. The neutral stimulus (NS) is the tone before conditioning, and after conditioning, it becomes the conditioned stimulus (CS), eliciting a conditioned response (CR) of salivation.
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