Discovery Lab Answers

Sally Rhine Feather, PhD is a parapsychology researcher and daughter of J. B. Rhine and Louisa E. Rhine, the founders of the Duke University Parapsychology Laboratory. Her work spans experimental research, archival and biographical scholarship, and the stewardship of her parents’ scientific legacy through the Rhine Research Center. The sources retrieved for this question cover several distinct lines of her work; what follows works through each dimension in turn.

Experiments

Memory and ESP comparison (1967). The earliest and most methodologically detailed experiment in the retrieved sources is Feather’s 1967 study, conducted at the Foundation for Research on the Nature of Man (FRNM) — the institutional successor to the Duke Parapsychology Laboratory ^[4]. The study tested whether performance on a memory task and performance on a standard ESP card-guessing task are positively correlated within the same individuals. The work began, according to Palmer’s review, somewhat accidentally: Feather had originally designed a frustration-induction procedure intended to produce below-chance ESP scoring, and the memory–ESP correlation emerged as an unexpected finding ^[4].

Psychokinesis experiments with Louisa E. Rhine. The ESP-Nexus page records that Feather worked with her mother, Louisa E. Rhine, on psychokinesis experiments examining whether target identity — specifically whether the target on successive trials is the same or different — affects PK performance. The retrieved numbered sources do not contain protocol or outcome detail for this line of work beyond that characterization.

Animal psi-trailing investigations with J. B. Rhine. Feather collaborated with her father on systematic investigations of animal psi-trailing cases — spontaneous reports in which non-human animals apparently navigate back to owners over unfamiliar routes. The work involved establishing evaluation protocols for these naturalistic anomalous-cognition reports ^[3].

Rhine–Jung correspondence analysis. The ESP-Nexus page records a scholarly line of work in which Feather analyzed the correspondence between J. B. Rhine and Carl Jung, with the aim of distinguishing between psi-mediated and acausal-coincidence (synchronicity) interpretations of anomalous events.

Popular-science documentation of spontaneous ESP. Feather authored a book documenting spontaneous ESP experiences reported by ordinary individuals, explicitly bridging laboratory research and naturalistic anomalous-cognition phenomena.

Biographical sketch of Louisa E. Rhine. Feather contributed a biographical chapter on her mother to Rao (1986), appearing under the name Sally Rhine Feather Hendrickson at that time ^[3].

Methodology

The memory–ESP study (1967) is the experiment for which the retrieved sources provide the most methodological detail ^[4]. Feather gave participants 15 seconds to memorize a randomized list of 25 standard ESP symbols immediately before a card-guessing task. The very brief memorization window — noted by Rao, Morrison, and Davis (1977) as a potential confound — raised the interpretive question of whether the memory task itself functioned more like an ESP task, which would artificially inflate the observed correlation ^[4]. Feather followed an initial unexpected finding with three additional series, each testing ten participants (described as mostly high school students) individually ^[4]. The design compared ESP scores with memory recall scores across the series, with the analysis focused on the within-participant correlation between the two measures.

For the animal psi-trailing investigations, the retrieved sources note that Feather and J. B. Rhine developed protocols for evaluating spontaneous case reports — a naturalistic rather than laboratory design, requiring criteria for what counts as a credible case and what alternative explanations must be ruled out.

The retrieved sources do not provide protocol-level detail for the PK experiments conducted with Louisa E. Rhine.

Data

The clearest quantitative record in the retrieved sources concerns the memory–ESP comparison work ^[4].

Palmer’s review combined z-statistics from six series (including subsequent replications by Kanthamani and others beyond Feather’s original work) using the Stouffer method, yielding a Stouffer Z of 2.82 (p < .005) for the RC/RW contrast across that broader literature ^[4]. That combined figure spans work beyond Feather’s own series and should not be read as her individual result.

Palmer notes a meaningful caveat: the short memorization duration could mean the memory task itself operated as an ESP test, in which case the positive correlation would reflect shared variance in psi performance rather than a genuine memory–ESP interaction ^[4].

The retrieved sources do not contain outcome statistics for the PK experiments with Louisa E. Rhine or for the animal psi-trailing case work.

Skeptical critiques

What critics argue. Palmer (2006) raises the primary methodological concern about Feather’s 1967 design: the 15-second memorization window was so brief that the memory task may have functioned more like an ESP test than a genuine memory test ^[4]. If so, the positive correlation between memory and ESP scores would not demonstrate that the two capacities share a common cognitive mechanism — it would instead reflect the fact that participants were essentially taking two ESP tests, and individual differences in psi ability drove both scores. Rao, Morrison, and Davis (1977), cited within Palmer’s review, identified the same concern ^[4].

What the experimental data show. Feather’s own combined result across three follow-up series was statistically significant (p = .012), with positive correlations in every series ^[4]. However, Palmer’s review notes that a replication attempt by Gambale (1976) failed to replicate the effect ^[4]. The broader Kanthamani series extended the paradigm at FRNM, and Palmer’s Stouffer combination across six series (including those beyond Feather’s original work) reached Z = 2.82, p < .005, for the RC/RW contrast — though that aggregate spans multiple researchers and protocols, not Feather’s series alone ^[4].

Analysis. The confound Palmer and Rao identify — that a 15-second exposure to ESP symbols may itself constitute an ESP trial — was not resolved within Feather’s original design. Gambale (1976) attempted replication and did not obtain the effect ^[4]. Whether the positive correlation in Feather’s series reflects a genuine memory–ESP relationship, an artifact of the brief exposure window, or both remains an open question in Palmer’s 2006 review, which is the most detailed treatment of this literature in the retrieved sources.

For Feather’s other lines of work — the PK experiments with Louisa E. Rhine, the animal psi-trailing case analyses, and the Rhine–Jung correspondence study — the sources retrieved for this question do not include published critical engagement.

For a fuller picture of her research record and institutional contributions, see her profile at Sally Rhine Feather, PhD.