Discovery Lab Answers

Stanley Krippner, PhD is a parapsychologist and consciousness researcher whose career spans more than six decades. His profile on ESP-Nexus is at Stanley Krippner, PhD. The sources retrieved for this question are weighted toward his later editorial and reflective writing rather than primary experimental reports, so the coverage of his experimental record here is a sample, not a complete accounting.

Experiments

Krippner’s most consequential experimental work was conducted at the Maimonides Medical Center Dream Laboratory in Brooklyn, where he served as co-director alongside Montague Ullman. The laboratory ran a systematic program of dream-telepathy experiments: a participant (the “receiver”) slept while EEG monitoring tracked REM periods, and an isolated “sender” concentrated on a randomly selected target image during those periods. Transcripts of the receiver’s dream reports were then compared against the target pool for correspondence. This program constituted one of the most sustained controlled investigations of anomalous experience in dream states in the history of parapsychology.

A parallel line examined hypnosis as a tool for studying anomalous experience. In studies from the late 1960s, Krippner compared anomalous experiences reported under hypnotic induction against non-hypnosis control conditions, testing whether altered states of consciousness facilitated psi phenomena.

Krippner also conducted large-scale studies of dream content, examining systematic variation across demographic groups — including gender differences — across multiple data sets.

His collaborative work extended to research at Maimonides involving Montague Ullman, Charles Honorton, and subjects including Felicia Parise, who participated in PK and ESP research there. He co-edited Varieties of Anomalous Experience with Etzel Cardeña and Steven Jay Lynn, a volume surveying the scientific evidence on anomalous experiences published by the American Psychological Association ^[1].

Later in his career he held positions at Saybrook University and the California Institute of Integral Studies, where he continued working on consciousness, transpersonal psychology, and the relationship between parapsychology and adjacent fields ^[2][3][4].

Methodology

The Maimonides dream-telepathy protocol was notable for its methodological rigor relative to earlier psychical research. Key design features included:

• EEG-REM monitoring to identify sleep stages objectively, so target transmission could be timed to confirmed REM periods rather than self-reported dreaming
• Isolation of sender and receiver, with the sender in a separate room concentrating on a randomly selected target
• Blind judging: dream transcripts were evaluated against the full target pool, with judges blind to which image had been selected, allowing hit-rate statistics to be calculated against chance expectation
• Randomized target selection from a prepared pool

This framework established a methodological standard for controlled dream research that subsequent investigators could replicate or adapt. The approach of using physiological monitoring to anchor the timing of anomalous-experience elicitation was an important design contribution.

For the hypnosis-comparison studies, the protocol contrasted anomalous reports from hypnotically induced altered states with those from non-hypnosis control conditions, keeping the question of whether state induction modulates psi reports at the center of the design.

Krippner also contributed methodological thinking at the field level — his co-editorship of Varieties of Anomalous Experience ^[1] and his participation in dialogues on the relationship between parapsychology and transpersonal psychology ^[2] reflect sustained attention to how anomalous experience should be defined, measured, and interpreted across disciplines.

Data

The sources retrieved for this question do not include the primary statistical tables from the Maimonides dream-telepathy experiments or the hypnosis-comparison studies. The ESP-Nexus page on Krippner notes that gender differences in dream content emerged consistently across multiple studies, with women reporting more emotional and interpersonal themes than men, but the retrieved excerpts do not carry the trial counts, hit rates, effect sizes, or significance values from the experimental series. The retrieved excerpts ^[1][2][3][4] are drawn from editorial introductions, a dialogue on transpersonal psychology, a mythological essay, and an obituary tribute — none of which present primary experimental data.

For the quantitative record of the Maimonides studies, the retrieved excerpts do not contain those figures; the underlying papers — published in the Journal of Parapsychology and assembled in Krippner and Ullman’s book-length report — would be the direct source to consult.

Skeptical critiques

What critics argue. No published critique of this work appears in the sources retrieved for this question.

The sources retrieved for this question do not include published criticism of this work by a named author.

What can be noted from the record itself: Krippner acknowledged, in the broader dialogue around parapsychology and mainstream science ^[2], that mainstream scientific spokespeople have consistently denied the validity of psi research. The editorial framing of Varieties of Anomalous Experience similarly situates anomalous-experience research as contested within mainstream psychology. These are contextual signals of the field’s reception, but they are not substitutes for named, cited critiques of Krippner’s specific protocols.

For fuller critical engagement with the Maimonides dream-telepathy program and Krippner’s experimental record, the Stanley Krippner, PhD page on ESP-Nexus is the place to look for the site’s curated treatment of both the evidence and the critical literature.