Discovery Lab Answers

D. Scott Rogo — Experiments and Data

The sources retrieved for this question cover several distinct areas of Rogo’s work: ganzfeld psi research, near-death experience (NDE) investigation, and anomalous telephone phenomena. Here is what those sources support.

Ganzfeld Psi Research

The most directly experimental work in the retrieved sources is a 1976 study Rogo conducted with Michael Smith (Maimonides Medical Center) and James Terry (Mind Science Foundation), published in the European Journal of Parapsychology ^[6]. The study investigated whether short-duration ganzfeld stimulation could facilitate psi-mediated imagery in unselected subjects.

A key quantitative finding in the retrieved passage concerns ganzfeld exposure duration as a variable across studies rather than a single outcome figure: the mean ganzfeld duration for unsuccessful studies (those with overall nonsignificant psi results) was 22 minutes, while successful studies had a longer mean duration — a difference of 15 minutes, with a reported t-statistic (t = 3.41, 13 df) indicating that longer durations were associated with significant results ^[6]. The passage frames this in terms of a “dosage effect” analogy drawn from non-parapsychological sensory attenuation research, attributed to Honorton ^[6]. The retrieved excerpt does not contain the primary hit-rate or effect-size figure for Rogo, Smith, and Terry’s own experiment specifically, so those figures should be sought in the paper itself.

The study was partially funded through a grant from the Parapsychology Foundation ^[6].

Near-Death Experience Research

Rogo was a prolific writer on NDEs. Kenneth Ring’s 1989 review of Rogo’s book The Return from Silence describes it as “unquestionably a major contribution to the field” and states Ring knew of no one who could have done it better — though Ring also noted “regrettable omissions” and criticism of the book’s title ^[1]. This is a book review, not a primary experimental study, and Ring’s praise is his own evaluative judgment, not an empirical finding.

Rogo also published on ketamine and the NDE (referenced in ^[2] and ^[3]), and on the possibility of experimentally inducing NDEs through out-of-body experience protocols and lucid dreaming ^[5]. The 1990 letter co-authored with Susan C. Litton notes that full NDE sequences — including out-of-body observations, tunnels, and white lights — had been reported from situations where the reporter was not physically or psychologically close to death, and argues this suggests experimental induction might be feasible ^[5]. This letter describes a research proposal/framework rather than reporting experimental data.

Anomalous Telephone Phenomena

Rogo’s 1979 collaboration with Raymond Bayless on Phone Calls from the Dead is cited as foundational work in the field ^[4]. Callum E. Cooper notes that by 2008 this research had been “practically forgotten,” and Cooper’s own subsequent work explicitly revived and expanded it ^[4]. The original Rogo–Bayless research is characterized in the sources as a case-collection and analysis effort rather than a controlled experiment; the retrieved sources do not contain statistics from that work.

Haunt and Poltergeist Theorizing

Beyond experimental work, the ESP-Nexus Haunt Phenomena and Poltergeist Cases pages note that Rogo synthesized ideas from Bozzano, Roll, and Price, proposing that apparitions in hauntings might be “conscious or semiconscious personalities,” and that in some poltergeist cases psychological distress was distributed across the whole household rather than concentrated in a single agent — theoretical positions rather than experimental data points.

Scholarly Exchange and Intellectual Style

The retrieved sources include a public exchange between Rogo and Michael Grosso in the Journal of Near-Death Studies (1984) ^[2][3]. Grosso argued Rogo mischaracterized the archetype interpretation of NDEs by selectively endorsing it where it served his own argument and dismissing it elsewhere ^[2]. Rogo’s reply was that his paper was specifically on ketamine and not on Grosso’s Jungian framework, and he urged both parties to focus on empirical research rather than “polemics” ^[3]. The exchange illustrates Rogo’s empirical orientation but also the interpretive disputes that surrounded his theoretical claims.

Skeptical Critiques

What critics argue. Grosso’s 1984 letter ^[2] charges Rogo with internally inconsistent use of the archetype concept — treating it as legitimate when it aligned with his argument and dismissing it as a “non-theory” elsewhere ^[2]. Anderson’s 1981 review of Phone Calls from the Dead (cited in ^[4]) raised questions about the book that Cooper’s later response also addresses, including limited new material relative to the original research.

What the experimental data show. Rogo’s reply ^[3] does not dispute the theoretical charge on its merits but reframes the question: his paper’s explicit focus was ketamine pharmacology and NDE phenomenology, not a comprehensive treatment of archetype theory, so the comparison Grosso draws may not apply to the scope of that paper ^[3]. On the telephone phenomena side, Cooper’s survey work ^[4] documented new cases and extended the research base, providing some empirical grounding for the phenomena Rogo and Bayless had originally catalogued through case collection.

Analysis. The Grosso–Rogo exchange is a methodological and interpretive dispute about theoretical framing, not a replication failure or a critique of experimental design. Independent replication of Rogo’s ganzfeld work under controlled conditions by researchers outside his collaborations is not documented in the retrieved sources, and the retrieved excerpt from ^[6] reports a cross-study duration analysis rather than a single confirmatory trial. His NDE work was primarily case-based and theoretical; Ring’s review ^[1] treats it as a significant synthesis while noting specific omissions.

For broader context on these research areas, the Haunt Phenomena and Poltergeist Cases pages carry additional discussion of Rogo’s contributions and the critical landscape around them.