AP PSYCHOLOGY

Detailed explanation-1: -Classical conditioning requires the existence of an unconditioned stimulus (UCS) that elicits an unconditioned response (UCR), that is, that reliably elicits an unlearned response, in the experimental subject. UCRs (unlearned responses) are also known as reflexes.

Detailed explanation-2: -Classical conditioning is a form of associative learning in which a neutral stimulus (conditioned stimulus, CS) is paired with another stimulus (unconditioned stimulus, US) that brings about an automatic, unlearned response.

Detailed explanation-3: -In this case, the chemotherapy drugs are the unconditioned stimulus (UCS), vomiting is the unconditioned response (UCR), the doctor’s office is the conditioned stimulus (CS) after being paired with the UCS, and nausea is the conditioned response (CR).

Detailed explanation-4: -The conditioned response (CR) is the response to the conditioned stimulus, whereas the unconditioned response (UR) corresponds to the unconditioned stimulus.