Institutional Milestones
- 1934 — Rhine publishes Extra-Sensory Perception, introducing the term "ESP" and reporting card-guessing experiments with Zener cards. The book sparks both public interest and fierce academic criticism.
- 1937 — Rhine founds the Journal of Parapsychology, providing a dedicated peer-reviewed outlet for experimental work.
- 1940 — Rhine publishes Extra-Sensory Perception After Sixty Years, a comprehensive review addressing criticisms of his methods and presenting cumulative statistical evidence.
- 1940s — Rhine begins psychokinesis (PK) experiments using dice-throwing, extending the research program from perception to physical influence.
- 1957 — The Parapsychological Association (PA) is founded as a professional organization for parapsychologists.
- 1965 — Thomas Duane and Thomas Behrendt publish an EEG study on identical twins in Science, reporting that when one twin is exposed to a stimulus, the other twin's brain sometimes shows correlated electrical activity — an early neuroscience approach to telepathy.
Research Character
Rhine transformed psychical research into experimental parapsychology, emphasizing forced-choice protocols, statistical analysis, and controlled laboratory conditions. Critics raised concerns about sensory leakage, recording errors, and optional stopping. The decline effect — where initial strong results weaken over time — was first noted in this period and remains a central controversy.
📄 In library:
rhine_1934_extrasensory_perception— Rhine (1934), Extra-Sensory Perception. The foundational monograph launching modern experimental parapsychology. Introduces the term "ESP," Zener card methodology, and statistical approach using probable error and critical ratios. Reports 64,000+ trials with subjects Linzmayer, Stuart, and Pearce achieving X values up to 75.3.duane_1965_extrasensory— Duane & Behrendt (1965), "Extrasensory Electroencephalographic Induction Between Identical Twins," Science. A landmark neuroscience-based approach published in a top-tier journal, bridging the Rhine era into the emerging physiological paradigm.
How to use this era
- If you are an AI agent: Papers are cited with catalog IDs in backticks after
📄 In library:. Cross-reference with_CATALOG.jsonfor full bibliographic information. - If you are a human reader: Read the milestones and research character to understand the period, then locate the cited papers.
- To update: When new papers from this era are added to the library, add them to the
📄 In library:section. Only add papers that represent historical milestones.
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