{"collection":"Parapsychology","full_text_available":false,"graph_url":"https://unchartedknowledge.5gfusion.net/v2/api/page/sacred_texts_v1_psi_esp_esp20_htm/graph","html_url":"https://unchartedknowledge.5gfusion.net/v2/page/sacred_texts_v1_psi_esp_esp20_htm","id":"sacred_texts_v1_psi_esp_esp20_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/esp20.htm","summary":"This is a chapter from J.B. Rhine's landmark 1934 experimental parapsychology monograph, written in the tradition of empirical laboratory science and presenting card-guessing trials as quantitative evidence for extrasensory perception. Rhine's central argument is that telepathy (perceiving another person's thoughts) and clairvoyance (perceiving physical objects directly) are not two distinct faculties but a single underlying perceptual process he terms ESP \u2014 distinguished only by whether the \"object\" perceived exists in ink or in a mind. His evidence comes from thousands of trials with seven subjects, who consistently scored at nearly identical above-chance rates under both conditions (averaging 8.1 hits per 25 for clairvoyance versus 7.9 for telepathy, against a chance baseline of 5), with day-to-day performance fluctuations rising and falling in tandem across both modes. Crucially, Rhine shows that every variable that affects one condition affects the other identically: sedatives (sodium amytal) suppressed both, stimulants (caffeine) raised both, illness and fatigue degraded both, and physical distance did not differentially impair either. The chapter's most distinctive claim is methodological \u2014 Rhine argues that prior European parapsychology (French researchers emphasizing clairvoyance, English researchers emphasizing telepathy) failed to test the relationship between the two, and that his controlled, separation-of-conditions design is the first to do so experimentally. A reader interested in the historical foundations of parapsychology as a would-be experimental science, or in early 20th-century debates about the nature of anomalous cognition, would find this essential primary source material.","tags":[],"text":null,"title":"Extra-Sensory Perception: Part III. Explanation and Discussion: Chapter 13. E.S.P. From the Viewpoint of General Parapsychology","tradition":"Parapsychology","translated_text":null,"word_count":3478}