AP PSYCHOLOGY

Detailed explanation-1: -(A stimulus is any event or situation that evokes a response.)

Detailed explanation-2: -The first stimulus was one that evoked the response to be tested, without prior experience. These types of stimulus-response pairs are known as innate reflexes, and the stimulus is named an unconditioned stimulus (US) and its response an unconditioned response (UCR).

Detailed explanation-3: -conditioning, in physiology, a behavioral process whereby a response becomes more frequent or more predictable in a given environment as a result of reinforcement, with reinforcement typically being a stimulus or reward for a desired response.

Detailed explanation-4: -A conditioned stimulus is a neutral cue or event that produces an involuntary response after repeatedly being paired with an unconditioned stimulus that naturally elicits that behavior.