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33 theories

Anomalous: theories of consciousness

Psi phenomena, near-death experiences and altered states such as meditation and psychedelics may show that consciousness reaches beyond the brain. These are less theories of consciousness than evidence offered against reducing it to neural activity.

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This category gathers ideas driven by experiences that seem to break the usual rules. They include extrasensory perception such as telepathy and precognition, out-of-body and near-death experiences, reports of past lives, and the altered states produced by meditation and psychedelics. If even a small share of these turned out to be genuine and to defy physics as currently understood, the claim that consciousness is nothing more than brain activity would be in trouble.

Psychical research began in the late nineteenth century, and William James and C. D. Broad took it seriously. James proposed that the brain works as a filter, letting through a narrow slice of a wider consciousness, an idea Aldous Huxley later called ‘Mind at Large’. Dean Radin and Charles Tart ran laboratory studies of psi, and the Division of Perceptual Studies at the University of Virginia investigates near-death experiences and children who report memories of past lives.

The theories built on this evidence lean toward dualism or idealism but span every non-materialist position. Radin favors a quantum-oriented dualism, Tart an emergent interactionism, Carl Jung a collective unconscious linked by synchronicity, and Rupert Sheldrake morphic fields that carry memory through nature. Ken Wilber’s integral theory and Jean Gebser’s mutations of consciousness map stages through which consciousness develops.

Everything here rests on whether the evidence holds up. Etzel Cardeña’s 2018 review in American Psychologist argued that meta-analyses covering more than a thousand studies support psi. Arthur Reber and James Alcock replied in the same journal that psi effects are physically impossible and must come from flawed methods or chance. Replication problems and the dominance of anecdote over controlled study keep most scientists unconvinced.

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