{"collection":"Parapsychology","full_text_available":false,"graph_url":"https://unchartedknowledge.5gfusion.net/v2/api/page/sacred_texts_v1_psi_esp_esp04_htm/graph","html_url":"https://unchartedknowledge.5gfusion.net/v2/page/sacred_texts_v1_psi_esp_esp04_htm","id":"sacred_texts_v1_psi_esp_esp04_htm","license":"unknown_pending_legal_review","rights_basis":"sacred_texts_v1_preview_gate_primary_text_only; acquisition-method/ToS and compilation-copyright questions still open, not resolved by this gate","source":"sacred_texts_v1","source_url":"https://unchartedknowledge.5gfusion.net/browse/psi/esp/esp04.htm","summary":"This is a foreword or preface \u2014 written by an established researcher endorsing J. B. Rhine's 1934 monograph *Extra-Sensory Perception* \u2014 situated within the early twentieth-century tradition of scientific psychical research. The text argues that Rhine's three-year experimental program at Duke University constitutes the most rigorous and voluminous investigation of telepathy and clairvoyance ever conducted, surpassing all prior efforts in duration, number of trials, institutional oversight, and methodological diversity. The author systematically addresses likely skeptical objections \u2014 unconscious whispering, unwitnessed trials, fraud \u2014 contending that the sheer variety and redundancy of controlled conditions makes any deception hypothesis implausible. A distinctive element is the author's own self-experiment: 5,000 card-guessing trials that produced results indistinguishable from chance, offered as a personal baseline to sharpen the contrast with Rhine's high-scoring subjects. The piece also highlights Rhine's finding that psychological and physiological variables (illness, boredom, drugs, sudden environmental changes) systematically affected scores in ways that pure random guessing could not explain, treating this as strong mechanistic evidence for a real perceptual faculty. The tone is that of a credentialed insider making a formal scientific case, not a popular advocate, and the author closes with a reader's guide directing non-specialists to the book's most statistically compelling sections first.","tags":[],"text":null,"title":"Extra-Sensory Perception: Introduction by Dr. Walter Franklin Prince","tradition":"Parapsychology","translated_text":null,"word_count":1998}