For blocking to occur,
A) one CS must be more intense than another.
B) the CSs must be of relatively equal intensity.
C) the US must be expected.
D) the US must be unexpected.

Question

Quizplus · Accepted Answer

Blocking occurs when a conditioned stimulus (CS) is paired with an unconditioned stimulus (US) that is already expected due to prior conditioning with another CS, preventing the new CS from acquiring associative strength.

For Blocking to Occur