Rats previously exposed to a tone followed by a brief intense electrical shock will show ________ when subsequently exposed to the tone (without shock).
A) reduced fear
B) an unconditional emotional response
C) reduced plasma levels of stress hormones
D) behavioral arrest (freezing)
E) grooming behavior

Question

Quizplus · Accepted Answer

Rats previously exposed to a tone followed by a shock learn to associate the tone with the shock, leading to a conditioned response of freezing (behavioral arrest) when they hear the tone again, even without the shock. This is a classic example of Pavlovian (classical) conditioning, where an originally neutral stimulus (the tone) becomes associated with an unconditioned stimulus (the shock) to elicit a conditioned response (freezing).

Rats Previously Exposed to a Tone Followed by a Brief