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Jim feeds his cat canned cat food. He notices that every time he operates the can opener, the cat begins to salivate. Obviously the cat has learned to associate the sound of the can opener with the food. Which variable is the CS?

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Final answer:

The can opener's sound is the conditioned stimulus (CS) that the cat has learned to associate with receiving food. This learning process is known as classical conditioning. Pairing this CS with another neutral stimulus, like a squeaky cabinet, can lead to higher-order conditioning.

Step-by-step explanation:

Understanding Classical Conditioning

In the example of Jim feeding his cat canned cat food, the cat begins to salivate each time it hears the sound of the can opener. In classical conditioning terms, the sound of the can opener has become the conditioned stimulus (CS). This is because the cat has learned to associate the neutral sound of the can opener with the food (the unconditioned stimulus or UCS) after several pairings. The cat's salivation, initially an unconditioned response (UCR) to the food, has now become a conditioned response (CR) to the sound of the can opener alone, without seeing the food.

In another scenario, if a squeaky cabinet holding Tiger's food is introduced before the sound of the electric can opener, the cat starts to associate the sound of the squeak with the upcoming food, through the process of higher-order conditioning. Eventually, the cat might begin to respond with excitement to the squeak itself, even before hearing the can opener. It's important to note though, that forming associations beyond this level (second-order conditioning) is challenging.

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