This article records tradition as it has been passed down and reported. Its sources are not yet part of the atlas's verified catalogue.
A psi phenomenon entry records a specific claimed paranormal or psychic ability or event, telepathy, precognition, psychokinesis or an out of body experience among them, considered as a documented subject of investigation rather than as an established fact or a settled fraud. Seymour Mauskopf and Michael McVaugh's history of experimental psychical research traces how each of these phenomena first became something researchers tried to test under controlled conditions rather than only report as personal anecdote.
An entry records how a given phenomenon has been defined and tested, what a documented experiment actually claimed to find, and what methodological criticism that claim later drew, since a phenomenon's popular description and its own investigators' careful, narrower experimental definition are frequently two different things worth recording separately.
Where a phenomenon's experimental record has produced disputed or contradictory results, and most of the phenomena recorded here have, the entry records that dispute honestly as part of the phenomenon's own documented history rather than declaring the question closed in either direction. Recording that dispute openly is itself part of treating a phenomenon as a genuine, ongoing subject of inquiry rather than as either an established fact or a closed, settled case.