In an example from your textbook, subjects were exposed to the following problem:

A $5 bill is placed on a table and a stack of objects is balanced precariously on top of the bill. The problem is to remove the $5 bill without touching or moving any of the objects on top of it. The best solution to this problem involves tearing the money. People who fail to solve this problem because they were taught that it is "taboo" to destroy "things of value" are probably experiencing which barrier to problem-solving?
a. pragmatic
b. learned
c. perceptual
d. emotional

ANSWER: b