Psychic power is the ability to sense information through some sort of extrasensory perception. Examples of psychic ability include describing in detail a location you have not seen or visited before, or predicting what is going to happen in the future. Psychic ability is very difficult to prove because scientific tests for this purpose have been inconclusive, as asserted by the Livescience website. This does not mean that psychic ability is not real. It simply means you must work hard to convince others that you have legitimate psychic powers.
Take online tests
Take online tests designed to measure psychic ability. You can find these tests on a plethora of websites, such as psychicguild.com, bepsychic.org and psychic-experiences.com. Take the tests in the presence of others and share the results when you are done.
Take offline psychic ability tests
Take offline psychic ability tests such as the Carl Zener Psychic Ability Test. In this "classic" test, you must discern the shape or symbol on a card you cannot see.
Have others ask you specific questions to which you could not possibly know the answers. For instance, you could be asked questions such as, "What is my social security number?" or "What was the name of my sister's first boyfriend?" Don't ask questions of the subjects--they may see this as "fishing," a technique common to skilled con artists in which the "psychic" gets basic information from which they can make subsequent assumptions.
Hire a professional
Hire a professional to monitor your physiology during psychic activities. Changes in brain waves, heart rate and skin all indicate your body's physical response to the activity. This doesn't necessarily prove you are psychic, but because physiological response is hard to fake, it can at least validate to others that you truly believe something is happening. Professionals may also be able to detect changes in your environment, such as temperature fluctuation, that are supposed to occur during communion with spirits.
Others may still be skeptical of your abilities even after you successfully take psychic tests and get positive results from a professional. They may think that the tests were rigged or that you were "in cahoots" with the professional you hired. Having these skeptics administer your offline tests and choose the professional themselves may help convince them you are telling the truth.