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

Question

Quizplus · Accepted Answer

Rats that have been conditioned to associate a tone with a brief electrical shock will exhibit behavioral arrest or freezing in response to the tone without the shock. This is a learned fear response to the conditioned stimulus (the tone) and indicates that the previous conditioning has been successful.

Rats Previously Exposed to a Tone Followed by a Brief