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 study entry records a specific, named investigation into a claimed paranormal or psychic phenomenon, an experiment, a data series, a controlled test or a documented field investigation, distinct from the phenomenon it investigates, which the atlas records under its own separate entry. The early card guessing experiments conducted at Duke University set much of the pattern later studies followed: a defined procedure, a specific research team, a stated set of results, and a debate over what those results actually showed.
An entry records who conducted a study and when, its stated method, and its reported outcome, along with whatever methodological criticism the study drew, since a study's raw statistical result and the scientific community's later assessment of its method are frequently two separate facts worth recording side by side rather than one substituting for the other.
Some studies recorded here produced results their own investigators considered striking, while later analysis identified a specific methodological flaw, an uncontrolled sensory cue, a selective reporting practice, that changed how the result is now read. The entry records both the original finding and that later reassessment as part of the same documented history.