Overview

Radin published this book as a follow-up to his earlier The Conscious Universe, which focused on marshalling the statistical case for psi from laboratory data.^[1] Where that earlier book concentrated on the evidence ledger, Entangled Minds reaches further: it asks why psi might exist, and it looks to quantum physics, specifically the phenomenon of entanglement, for a conceptual home.^[1] Radin holds a doctorate in psychology from the University of Illinois at Urbana-Champaign and a master’s degree in electrical engineering; he has held research positions at SRI International, Princeton University, the University of Edinburgh, and the University of Nevada, and at the time of writing was Chief Scientist at the Institute of Noetic Sciences.^[1] That background shapes the book’s dual register: it moves between careful summaries of experimental findings and speculative theoretical proposals, and it is explicit about which is which.^[1]

The book opens by noting that unexpected discoveries across many scientific disciplines, dark energy in cosmology, neuroplasticity in neuroscience, quantum coherence in biology, have repeatedly overturned assumptions once thought settled.^[1] Radin uses this pattern to argue that psi research deserves the same open-minded scrutiny, and that dismissing it on principle repeats the same error made by scientists who once dismissed continental drift or bacterial ulcers.^[1] The book also makes a historical argument: that several foundational tools of modern science, the EEG, the randomized controlled trial, key methods in experimental psychology, were first developed or refined in the context of psychical research, a lineage most textbooks omit.^[1]

Key concepts

• Entanglement (quantum), The property of quantum systems whereby two particles, once they have interacted, remain correlated regardless of the distance separating them; a change in the measured state of one is instantly reflected in the other. Radin uses this established physics phenomenon as the conceptual anchor for his proposal about psi.^[1]
• Bioentanglement, Radin’s term for the hypothesis that quantum entanglement operates within and among living systems, potentially explaining the holistic properties of biological organisms and, by extension, psi phenomena.^[1]
• Psi, A neutral umbrella term coined by British psychologist Robert Thouless in 1942 to refer to psychic phenomena without implying any particular mechanism or origin. It covers telepathy (mind-to-mind connection), clairvoyance (perceiving distant events), precognition (perceiving future events), and psychokinesis (mind-matter interaction).^[1]
• Presentiment, The hypothesis that the body registers a physiological response to an emotionally significant future event before that event occurs and before the person consciously knows it will occur. Radin treats this as one of the most experimentally tractable forms of psi.^[1]
• Decoherence, The process by which quantum coherence is disrupted when a quantum system interacts with its environment, causing quantum effects to become undetectable at the everyday scale. Radin acknowledges decoherence as a genuine challenge to any quantum account of psi, but argues it does not eliminate entanglement from the macroscopic world, it only makes it harder to observe directly.^[1]
• Forbidden knowledge, Radin’s label for the social and institutional pressures, concerns about peer opinion, funding, and publication, that discourage scientists from studying controversial topics, including psi. He cites a 2005 survey in the journal Science on informal constraints in academic research as evidence that this dynamic is not unique to parapsychology.^[1]
• EEG correlation experiment, A class of experiment in which two people are physically isolated from each other and one is exposed to a stimulus while the other’s brain activity is monitored for a corresponding response. Radin presents these as a laboratory analog to spontaneous telepathic experiences.^[1]
• File drawer problem, The concern that published studies overestimate true effect sizes because null results are less likely to be submitted or accepted for publication. Radin addresses this through fail-safe N calculations, estimating how many unpublished null studies would be needed to eliminate the observed effects.^[1]

What the author argues from there

Radin’s theoretical move is to propose that the experimental evidence for psi and the physics of quantum entanglement are not merely analogous but may reflect the same underlying reality.^[1] He argues that if entanglement is genuinely pervasive, extending from subatomic particles through biological systems and potentially to the scale of the whole universe, then psi experiences are not violations of natural law but expressions of it.^[1] On this view, psi is reframed from a paranormal anomaly into what Radin calls “an unavoidable consequence of living in an interconnected, entangled physical reality.”^[1]

This is the author’s interpretation, not an established scientific conclusion. Radin is explicit that he is not claiming quantum entanglement mechanically explains psi; he acknowledges that the physics of entanglement as currently understood does not straightforwardly permit the transfer of classical information faster than light, and that bridging the gap between atomic-scale entanglement and human-scale psi experience requires theoretical work that has not yet been done.^[1] He frames the quantum connection as a “new way of thinking about psi” rather than a proven mechanism.^[1]

Competing interpretations of the same experimental data include: (1) that the above-chance results reflect undetected methodological flaws, selective reporting, or subtle sensory cues rather than any genuine psi effect; (2) that even if the effects are real, they do not require a quantum explanation and could reflect unknown classical mechanisms; and (3) that the analogy between quantum entanglement and psi is a category error, since entanglement as understood in physics does not permit the kind of information transfer psi would require.^[1] Radin engages the first objection at length through his meta-analytic summaries; he engages the second and third more briefly, treating them as open questions rather than settled refutations.^[1]

The book also argues that the historical roots of several scientific tools in psychical research, the EEG, the randomized controlled trial, methods in experimental psychology, suggest that psi research has already contributed to mainstream science without receiving credit, and that a more open institutional attitude could accelerate progress.^[1] This is a sociological argument about the conduct of science rather than an empirical claim about psi itself.

At its broadest, the book proposes a shift in ontology: from a worldview in which minds are isolated within individual skulls to one in which consciousness participates in a deeply interconnected physical reality.^[1] Radin notes that this view resonates with Eastern philosophical traditions that have long assumed an interconnected universe, and he suggests that Western science is slowly catching up to insights those traditions have held for millennia.^[1] This metaphysical extension goes well beyond what the experimental data, as summarized in the preceding section, can support on its own.

Significance

The book is cited across a range of parapsychology and consciousness-research publications as a standard reference for the quantum-psi hypothesis and for Radin’s summaries of the experimental literature.^{[2][3][4][5][6][7][8]} It appears in reference lists spanning topics from ganzfeld methodology to mind-matter interaction, EEG correlation research, distant healing, and evolutionary accounts of psi, suggesting it functions as a broad entry point to the field for researchers working across subdomains.^[3][4][7]

The book was published by Simon & Schuster, giving it wider distribution than most parapsychology titles, and it is cited alongside Radin’s earlier The Conscious Universe as one of the two books most commonly used to introduce the experimental case for psi to general and academic audiences.^[1][5] Its framing of psi as potentially consistent with quantum physics has been taken up by subsequent researchers as a theoretical starting point, though the specific mechanism remains unresolved and contested.^[9][8]