Say your ability is guessing Zener cards. Here is the protocol:
For each trial:
You sit at a table with a tester who is an avowed believer in ESP. He shuffles the deck and deals the cards face down, one at a time and you guess each card, then he turns it over. Meanwhile, there is a skeptic or non-skeptic (randomly chosen) watching the test from a position where you cannot see them.
Based on your good or bad results you determine whether the skeptic or the non-skeptic was watching.
Pass 10 out of 10 trials and you have passed the preliminary test.
IXP
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