Some people seem to easily discredit psychic phenomena by setting up tests for purported psychics that they fail.
For example, famed debunker James Randi tested several psychics as part of an ABC program, having them try to correctly discern images contained in several envelopes. It would seem that the psychics who could not guess correctly did not have special abilities.
While quick and simple tests are often highly publicized because they are suited to popular media, the more technical data that could support the existence of psychic abilities is easily buried in academic papers.
