How well do you handle stress?

According to an email I received, the pictures below are used to test the level of stress a person can handle.

The slower the pictures move, the better your ability of handling stress.

Allegedly, criminals that were tested see them spinning around madly; however, senior citizens and kids see them standing still.

None of these images are animated - they are perfectly still.

NOTE: This works better if you click each picture for a larger view.