What evidence best illustrates that the perception of pain is influenced by experience?

The best evidence that describes that percpetion of pain is influenced by experience is when a pregnant woman assists to childbirth classes.

Explanation:

When pregnant women know how the pain will be during this certain life epsiode of childbirth through examples, like videos, conferences and others, the action probably would be known because of the childbirth training. So, psychologically the body and mind is prepare to it by this prior knowledge when the delivery time comes