Answer:
The conditioned stimulus is to open the cupboard door.
Explanation:
<em>Classical conditioning was developed by Ivan Pavlov. It consisted of associating two different stimuli to achieve the same response in a conditioned and unconditioned way.</em>
In this case, the presence of cat food induces the unconditional response that cats come running. After several repetitions<u>, the cats begin to associate that, when Rachel opens the cupboard door, it means they will have food. So there comes a time when the cats will come running only with Rachel opening the cupboard door:</u>
- Unconditional stimulus (cat food) = Unconditional response (Cats come running into the kitchen).
- Conditioned stimulus (Rachel opens cupboard door) + Unconditional stimulus (cat food) = Unconditional response (Cats come running to the kitchen).
- Conditioned stimulus (Rachel opens cupboard door) = Conditioned response (Cats come running to the kitchen).