At www.gotpsi.org there is a card draw test that allows you to exert
intention over whether a card will turn over with an image or not.
Others include guessing where the card is hidden, a sequential test
that tracks how many guesses out of 5 it takes for you to find it, and
remote viewing tests. It tells you what the odds are to chance for
your results. The draw test is of course more relevant to qigong
treatments for obvious reasons.