Alexander Learns the Names of All Fifty States of the United

Multiple Choice

Alexander learns the names of all fifty states of the United States while he is in a very happy mood.Later,while he was in a sad mood,he can remember only twenty of the states.However,when Alexander was again happy,he can remember all fifty states.The principle that best explains this memory effect is ____.

A) melancholic inhibition
B) positive facilitation
C) context-specific memory
D) mood congruency