Cognitive Perspective -Paul Is Taking a Memory Test. the Test Moderator Reads

Cognitive Perspective
-Paul is taking a memory test. The test moderator reads him the names of several countries and Paul must repeat them. Paul has an easy time retaining and repeating short country names such as China, Chad, Fiji, and Iran. However, he has a much harder time remembering countries with longer names such as Kazakhstan, Papua New Guinea, and Venezuela. What is this called?

A) Short-term memory
B) Word length effect
C) Digit span
D) Long-term memory