Home›Open Questions›Would the Census of Hallucinations' coincidence rate for crisis apparitions survive a prospective, controlled test rather than retrospective testimony?Open QuestionsWould the Census of Hallucinations' coincidence rate for crisis apparitions survive a prospective, controlled test rather than retrospective testimony?Citation FormatsGeneral ReferenceGeneral Reference Citation TextDivinity Atlas. "Would the Census of Hallucinations' coincidence rate for crisis apparitions survive a prospective, controlled test rather than retrospective testimony?." Accessed August 30, 2026. https://www.divinityatlas.com/open-questions-index/would-the-census-of-hallucinations-coincidence-rate-for-crisis-apparitions-survive-a-prospective-controlled-test-rather-than-retrospective-testimony.Copy General ReferenceAPA StyleAPA Style Citation TextDivinity Atlas. (n.d.). Would the Census of Hallucinations' coincidence rate for crisis apparitions survive a prospective, controlled test rather than retrospective testimony?. Retrieved August 30, 2026, from https://www.divinityatlas.com/open-questions-index/would-the-census-of-hallucinations-coincidence-rate-for-crisis-apparitions-survive-a-prospective-controlled-test-rather-than-retrospective-testimonyCopy APA StyleBibTeXBibTeX Citation Text@misc{divinityatlas-would-the-census-of-hallucinations-coinc, author = {Divinity Atlas}, title = {Would the Census of Hallucinations' coincidence rate for crisis apparitions survive a prospective, controlled test rather than retrospective testimony?}, year = {2026}, url = {https://www.divinityatlas.com/open-questions-index/would-the-census-of-hallucinations-coincidence-rate-for-crisis-apparitions-survive-a-prospective-controlled-test-rather-than-retrospective-testimony}, note = {Accessed August 30, 2026} }Copy BibTeXOpen QuestionCross-Tradition ConnectionsSourcesEssays About This Entity (1 essay)Comments (0)Reader Challenges (0 open reader challenges)Open QuestionThe 1889-1894 Census of Hallucinations argued that apparitions coinciding with a real death occurred more often than chance, but the finding rests entirely on retrospective self report gathered by volunteers approaching people they knew, against a chance baseline its own authors had to construct. No prospective, controlled test of crisis apparitions has been conducted since.What would resolve this A prospectively registered study defining in advance what counts as a qualifying apparition and a chance baseline independent of the reporting population, run forward in time rather than reconstructed from memory.OpenStatistics; survey methodology; history of psychical researchHenry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnson, Report on the Census of HallucinationsCross-Tradition ConnectionsDiscipline NeededHistory of Psychical Research, Scholarly Disciplines Well-attested Source Report on the Census of HallucinationsHenry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnsontier 1Statistics, Scholarly Disciplines Well-attested Source Report on the Census of HallucinationsHenry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnsontier 1Survey Methodology, Scholarly Disciplines Well-attested Source Report on the Census of HallucinationsHenry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnsontier 1Question OnApparitions and Crisis Apparitions, Psi Phenomena Well-attested Source Report on the Census of HallucinationsHenry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnsontier 1SourcesReport on the Census of Hallucinationstier 1Henry Sidgwick, Eleanor Sidgwick, Frederic W. H. Myers, Frank Podmore, Alice Johnson, Proceedings of the Society for Psychical Research, Vol. X, 1894View the SourceEssays About This Entity (1 essay)Four Open Questions Point to Statistics, and All Four Are Missing the Same ThingThe open question itself, confirmed publicComments (0)No comments yet. Be the first to share a thought.Sign in to join the discussion.Reader Challenges (0 open reader challenges)No disputes yet. Spotted an error or a better source? Open the first one.Sign in to dispute this or suggest a correction.View At A Past YearThe atlas records no dated fact of its own for this entry, so there is no other year to choose.Show This Year