Ganzfeld experiments
E739158
Ganzfeld experiments are parapsychological studies that attempt to detect evidence of extrasensory perception by placing participants in a sensory-reduced environment and testing for above-chance information transfer.
Statements (53)
| Predicate | Object |
|---|---|
| instanceOf |
extrasensory perception experiment
ⓘ
parapsychological experiment ⓘ |
| aim |
to detect above-chance information transfer without known sensory channels
ⓘ
to test for extrasensory perception ⓘ |
| associatedConcept |
clairvoyance
ⓘ
psi ⓘ telepathy ⓘ |
| auditoryReductionMethod | white noise played through headphones ⓘ |
| autoganzfeldFeature |
automated recording of responses
ⓘ
computer-controlled randomization and presentation of targets ⓘ |
| blinding |
experimenter may be blind to target in some protocols
ⓘ
receiver is blind to target identity ⓘ |
| commonCriticism |
file-drawer effect and publication bias
ⓘ
inadequate randomization of targets ⓘ insufficient replication under strict controls ⓘ methodological flaws in early studies ⓘ sensory leakage possibilities ⓘ |
| criticizedBy |
mainstream psychologists
ⓘ
skeptical researchers ⓘ |
| ethicalConsideration |
generally considered low risk
ⓘ
requires informed consent from participants ⓘ |
| evaluationMethod |
forced-choice judging among several targets
ⓘ
receiver rates similarity of multiple candidate targets ⓘ |
| field | parapsychology ⓘ |
| inductionMethod |
mild hypnosis or guided imagery in some protocols
ⓘ
relaxation instructions ⓘ |
| interpretationDispute |
critics attribute results to methodological artifacts and biases
ⓘ
parapsychologists interpret positive results as evidence for psi ⓘ |
| metaAnalysisResult | some meta-analyses report small but statistically significant effects ⓘ |
| notableProponent |
Adrian Parker
NERFINISHED
ⓘ
Charles Honorton NERFINISHED ⓘ Daryl Bem NERFINISHED ⓘ Dean Radin NERFINISHED ⓘ Ray Hyman (as critic and analyst) NERFINISHED ⓘ |
| originatedInDecade | 1970s ⓘ |
| primaryMeasure |
effect size of information transfer
ⓘ
hit rate above chance expectation ⓘ |
| relatedTechnique |
autoganzfeld protocol
ⓘ
sensory deprivation ⓘ |
| responseMode | receiver gives free-response mentation reports ⓘ |
| statusInScience |
considered controversial
ⓘ
not accepted as evidence for ESP by scientific consensus ⓘ |
| targetSelectionMethod | random selection from a target pool ⓘ |
| targetType |
drawings
ⓘ
photographs ⓘ static images ⓘ video clips ⓘ |
| typicalSetup |
receiver placed in a relaxed state with reduced visual and auditory input
ⓘ
sender attempts to mentally transmit target information to receiver ⓘ |
| useMethod |
mild sensory homogenization
ⓘ
sensory reduction ⓘ |
| visualReductionMethod |
translucent halved ping-pong balls over the eyes
ⓘ
uniform diffuse red light illumination ⓘ |
Referenced by (1)
Full triples — surface form annotated when it differs from this entity's canonical label.