In classical conditioning, a US is
A) an unlearned reaction to a stimulus that occurs without previous conditioning.
B) a learned reaction to a stimulus that occurs as a result of previous conditioning.
C) a stimulus that evokes a response without previous conditioning.
D) a previously neutral stimulus that has acquired the capacity to evoke a learned response.

Question

Quizplus · Accepted Answer

In classical conditioning, a US (Unconditioned Stimulus) is a stimulus that naturally and automatically triggers a response without any prior learning or conditioning.

In Classical Conditioning, a US Is