An animal's fearful reaction to a previously neutral stimulus can be unlearned by repeatedly presenting the _______ without the _______.
A) UR; US
B) US; CS
C) CR; CS
D) CS; US

Question

Quizplus · Accepted Answer

This is describing the process of extinction in classical conditioning, where the conditioned stimulus (CS) is repeatedly presented without the unconditioned stimulus (US) in order to unlearn the conditioned response (CR). Option A is backwards and refers to the original pairing of the US and unconditioned response (UR). Option B is referring to the initial pairing of the US with a neutral stimulus that becomes the CS. Option C is referring to the learned response to the CS.

An Animal's Fearful Reaction to a Previously Neutral Stimulus Can