William James (1842–1910) – Founder of American Psychology and 25 Years of Leonora Piper

Published on 2026-05-18 · 13 min read

William James (1842–1910) is, in the psychology textbook, the founder of American academic psychology: Harvard professor from 1872, builder of one of the first experimental-psychology laboratories in the United States (Harvard 1875), author of the epochal Principles of Psychology (Henry Holt 1890) and founder of philosophical pragmatism. What is not in the psychology textbook: James was at the same time twice president of the British Society for Psychical Research (SPR, 1894–1895), co-founder of the American Society for Psychical Research (ASPR) in 1885 and for over 25 years the principal academic investigator of the Boston medium Leonora Piper – Mrs. Piper's mediumship was for James the one single case which the materialist psychology of his day had required to explain and could not explain. James died on 26 August 1910 – months after the 1909 Palladino exposure staged in New York by his own former student Hugo Münsterberg, in which American academic psychology publicly cut itself off from its psychical-research root. William James is the bridge figure of the pattern series: the man who personified the older matter-of-courseness, whose death in 1910 marks the American closing of the window, and whose own student carried out the closing.

Who was William James?

Born on 11 January 1842 in a hotel at New York's Astor Place, the oldest of five children of the independently wealthy theologian and Swedenborgian Henry James Sr.. His younger brother was the novelist Henry James, his sister Alice James the famous diarist. The upbringing of the James siblings was extraordinary: constant Atlantic crossings between Boston, New York, London, Paris, Geneva, Bonn; tuition in languages, art, the natural sciences, theological and philosophical conversation at the family table. Henry Sr. was not an orthodox Christian but an independent Swedenborgian theologian who lived an open, seeking religiosity before his children.

William James as a young man wavered between painting, natural science and medicine. In 1864 he enrolled at Harvard Medical School, interrupted his studies in 1865 for an Amazon expedition with the naturalist Louis Agassiz, completed his medical doctorate in 1869 – without ever practising as a physician. In 1872 Harvard appointed him initially as instructor in anatomy and physiology, from 1875 as instructor in physiological psychology. James set up in the same year one of the first experimental-psychology laboratories in the United States. In 1880 he became assistant professor of philosophy, in 1885 full professor of psychology. His Harvard period lasted 35 years until retirement in 1907.

Principles of Psychology (1890): the discipline-founding work

In 1890, after twelve years of work, James published with Henry Holt & Company in New York his main work: The Principles of Psychology, two volumes, together about 1,400 pages. The book was immediately recognised as the standard textbook of American psychology. It is the only comprehensive presentation of the whole then-available psychology – physiological foundations, perception and attention, memory, will, emotion, the stream of consciousness (stream of consciousness, a term James coined), the self, hypnotic phenomena.

James defines in the Principles psychology explicitly as "the description and explanation of states of consciousness as such". This is programmatic: consciousness as object of psychology, not as an epiphenomenon abstracted away from study. James was thereby a phenomenologist avant la lettre and continues to have echoes in contemporary consciousness philosophy (David Chalmers, Eugene Taylor, Andreas Sommer and others cite him as a methodological ancestor).

Two chapters of the Principles explicitly treat phenomena that the later psychology textbook omits: ch. 8 Relations of Minds to Other Things and ch. 10 The Consciousness of Self speak openly about mediumistic, telepathic and subliminal experiences. The ASPR investigations are already referenced as an ongoing research programme. The dividing line between "academic psychology" and "psychical research" does not exist for James at this point.

1885: ASPR foundation and the first meeting with Leonora Piper

In 1882 the Society for Psychical Research (SPR) was founded in London – with Henry Sidgwick as the first president, with Frederic Myers, Edmund Gurney, Frank Podmore, Henry and Eleanor Sidgwick on the council. Three years later, in 1885, James, the astronomer Simon Newcomb, the physiologist Henry Pickering Bowditch and other American scientists came together to form a sister organisation: the American Society for Psychical Research (ASPR). James was the main driver, wrote the founding manifesto and remained for twenty-five years the central academic figurehead of the ASPR.

In the same year, in late summer 1885, James made the acquaintance that was to give his psychical-research programme direction and persistence: Leonora Piper (1857–1950), a Boston housewife and unobtrusive middle-class woman, in whose trance state the personality of a "Dr. Phinuit" (later other "controls") spoke and made detailed, verifiable statements about the deceased relatives and acquaintances of her clients. James's mother-in-law, who had been among Piper's first clients, drew James's attention to her.

James investigated Piper personally, then with the SPR's help. He recruited the Australian-British lawyer Richard Hodgson, whom the London SPR had sent in 1884 to Madras as a sceptic to expose the theosophist Madame Blavatsky (successfully – in 1885 Hodgson delivered the report that exposed Blavatsky as a fraud). Hodgson came to Boston in 1887, took over leadership of the American ASPR, and continued the Piper investigation until his death in 1905. The man who had exposed Blavatsky became, with Piper, a convert – not out of naivety but on the basis of decades of accumulated evidential material.

The "white crow" argument

James summarised his methodological argument for Piper's importance in a famously memorable image:

"To upset the conclusion that all crows are black, there is no need to seek demonstration that no crows are black; it is sufficient to produce one white crow; a single one is sufficient. (…) My own white crow is Mrs. Piper. In the trances of this medium, I cannot resist the conviction that knowledge appears which she has never gained by the ordinary waking use of her eyes and ears and wits."
— William James, Presidential Address to the Society for Psychical Research, 1896.

The argument is epistemologically clean: James does not defend spiritualism as a doctrine; he argues that the materialist psychology of his day had made a universal negative claim ("such phenomena do not exist") which can be refuted by one single sufficiently well-evidenced counter-case. Mrs. Piper is James's counter-case. For over 25 years she was investigated by changing ASPR/SPR researchers; the cumulative session protocols run to several thousand pages and are preserved in the ASPR archive in New York and the SPR archive in London.

1894–1895: SPR presidency

1894–1895 James served as the second president of the British Society for Psychical Research, after Henry Sidgwick and before Frederic Myers, Frank Podmore, Oliver Lodge, William Crookes and Charles Richet – thus as part of a British-international line of top natural scientists who held the SPR presidency in the 1890s and 1900s (see our articles on William Crookes, Oliver Lodge, Lord Rayleigh, J. J. Thomson and Charles Richet). James was the first American SPR president and remained the only one until well into the 20th century.

His presidential address of January 1896, printed in the Proceedings of the SPR, is one of the methodologically clearest statements of his position: psychical research, he argues, is exactly the same business as any other experimental natural science – collecting, documenting, testing, falsifying – only with phenomena that happen to be harder to standardise. That is the methodological position which Charles Richet will work out a quarter-century later in his Traité de Métapsychique (1922).

Varieties of Religious Experience (1902): the Gifford Lectures

In 1901–02 James delivered at the University of Edinburgh the famous Gifford Lectures – that lecture series running since 1888 devoted to "natural theology", in which after James Werner Heisenberg (1955/56), John Eccles (1977/78) and many others would continue the metaphysical-natural-philosophical tradition. James's lectures appeared in 1902 as The Varieties of Religious Experience. A Study in Human Nature (Longmans). It is to this day the most-read psychological-philosophical treatment of religious experience in the English language.

The method: James takes the personal reports of mystical, conversionary and ecstatic experiences across religious traditions seriously as empirical material and investigates them phenomenologically. He arrives at four markers of genuine mystical experience (ineffability, noetic quality, transience, passivity). He argues explicitly against the reduction of such experiences to pathological brain states – without denying their neurological grounding. "The medical material" and "the spiritual significance" are for James two orthogonal descriptions, both legitimate, neither reducible to the other.

The Energies of Men (1907)

In April 1907 James gave the inaugural address of the Columbia meeting of the American Philosophical Association as its outgoing president. The lecture appeared in 1908 in Philosophical Review and as a separately printed pamphlet under the title The Energies of Men. James's thesis: human beings have deeper reserves of energy than contemporary experimental psychology knew. These reserves can be activated by certain religious, meditative, hypnotic or purely moral exercises – with measurable physical and mental performance enhancements.

This is not spiritualism, this is not psychical research in the narrow sense. It is the claim that academic psychology has framed human functional capacity too narrowly and that extending the investigative field to religious, contemplative and extraordinary experiential forms would be scientifically productive. James's 1907 address is, in effect, his last public plea for the connection of scientific psychology with the field of extraordinary experiences he had investigated at the ASPR for two decades.

1909: The Final Impressions of a Psychical Researcher

In October 1909, ten months before his death, James published in American Magazine a long essay under the title The Final Impressions of a Psychical Researcher. It is his testament on the subject, written at the end of a 25-year investigation. James goes through all the main categories of the material once more – trance mediumship, telepathy, apparitions, "cross-correspondences" between several mediums – and formulates his considered final assessment.

The central statement:

"Out of my experience, such as it is (and it is limited enough), one fixed conclusion dogmatically emerges, and that is this, that we with our lives are like islands in the sea, or like trees in the forest. The maple and the pine may whisper to each other with their leaves (…). But the trees also commingle their roots in the darkness underground, and the islands also hang together through the ocean's bottom. Just so there is a continuum of cosmic consciousness, against which our individuality builds but accidental fences."
— William James, The Final Impressions of a Psychical Researcher, American Magazine, October 1909.

This is an astonishing statement at the end of a 25-year empirical programme: James arrives at the view that individual consciousnesses are embedded in a more comprehensive, continuous cosmic consciousness, which he believes he has read out of Piper's trances and the other ASPR materials. It is a striking anticipation of what reappears later in the post-1906 line: in Jung as the collective unconscious, in Schrödinger as singular consciousness, in Bohm as implicate order.

26 August 1910 – the American closing of the window

James died on 26 August 1910 at Chocorua, New Hampshire, in his summer house, of heart trouble, two days after returning from a trip to Europe. He was 68 years old. His last manuscript, an introduction to philosophy under the title Some Problems of Philosophy, remained unfinished; his brother Henry James edited it posthumously in 1911. The Essays in Psychical Research, James's collected contributions in this field, appeared only in 1986 as a critical complete edition from Harvard University Press under Frederick H. Burkhardt – 76 years after his death.

The date is striking. Only two years and four months earlier, on 19 April 1906, Pierre Curie had been killed in an accident in Paris, weeks before a planned systematic publication of his Palladino sittings. Just under three years before that, in December 1907, Lord Kelvin – the most prominent publicly theistic British physicist – had died in Largs. James's death in August 1910 closes, after Curie 1906 and Kelvin 1907, a remarkably narrow sequence in which the three most important bridge figures between top-rank natural science and non-materialist description of reality leave the stage within four years.

The Münsterberg paradox

The most paradoxical detail of the whole story comes from the historian of science Andreas Sommer from Cambridge, whose Wellcome Trust-funded dissertation at University College London in 2013 reconstructed in detail the institutional separation of academic psychology from psychical research (see our article on Mediumship and Power). Sommer documents: the person who in 1909 in New York and Boston publicly "exposed" the Italian medium Eusapia Palladino as a fraud, thereby staging the institutional distancing ritual of American psychology from its psychical-research root, was Hugo Münsterberg (1863–1916) – James's own German student, whom James had brought to Harvard in 1892 and patronised for over a decade.

Münsterberg's staging of the Palladino investigation was methodologically questionable (Sommer shows it in detail) and politically successful. The son-against-father conflict – the student distances himself from the teacher through a public ritual in which he discredits the shared research field – is here biographically concrete. James lived through it in the last months of his life and commented on it in letters; his testamentary essay of October 1909 is also to be read as a response to Münsterberg's staging.

With Münsterberg's appearance in 1909 and James's death in 1910 the institutional closing of the window in America is complete. What James had built up over 25 years at the ASPR – academically respectable, methodologically careful, peer-reviewed investigation of mediumistic phenomena – is pushed out of university psychology by his own former student. This detail alone illustrates the thesis that the break was not a data break but an institutional setting of points – driven by reputation management, not by a new experimental situation.

Position in the pattern

William James is the only bridge case of the pattern series who stands with one foot in the pre-1906 world and one foot in the post-1906 world:

  • Pre-1906 profile: Like Maxwell, Kelvin, Crookes, Rayleigh, Thomson, Lodge and Richet, James could openly be a top academic and active psychical researcher. Harvard professor, ASPR co-founder, SPR president, without either role institutionally damaging the other.
  • Bridge function: James dies on 26 August 1910, exactly in the four-year window (Curie 1906 / Kelvin 1907 / James 1910) in which the public model "prominent natural scientist + psychical research" breaks down institutionally. After James there is for a century no repetition of this profile in the United States at a comparable level.
  • Specific mechanism: With James the break is not carried out by data contradictions, not by funding cuts, not by police or court – but by his own student. Münsterberg's 1909 Palladino staging is the methodologically clearest documented example of the early institutional distancing rituals which Sommer reconstructs in his dissertation.
  • Legacy: James's Final Impressions essay of 1909 is an astonishing anticipation of later post-1906 positions – cosmic continuum of consciousness, "islands in the sea (…) commingling their roots in the darkness underground". Jung's collective unconscious (from 1916), Schrödinger's singular consciousness (from 1944) and Bohm's implicate order (from 1980) stand in this line.

What remains

  • James's double role was a matter of course in 1900. Harvard professor, founder of American psychology, SPR president, ASPR co-founder, 25 years of the Piper investigation. Twenty-five years after his death this combination was institutionally no longer possible. The shift was not compelled by a new data situation; it was carried out institutionally.
  • Mrs. Piper remains the "white crow". Investigated over 25 years by changing, independent researchers (James, Hodgson, the Sidgwicks, Podmore, Newbold and others); session protocols preserved in the archives of the SPR (London) and ASPR (New York). The cumulative source situation has never been systematically falsified. It is not mentioned in today's psychology textbooks.
  • The Final Impressions of 1909 are a key text. Here the founder of American academic psychology says, at the end of a 25-year empirical programme: there is something, a "continuum of cosmic consciousness", that stands beyond individual consciousness and for which the data suffice. This statement has not been withdrawn. It stands.
  • Münsterberg paradox. The break of American psychology with its root was staged by James's own student. That is a biographical point that sharpens the pattern argument: the shift was not data-driven; it was institutionally pushed through from within. More on this in Andreas Sommer's research, documented in our article on Mediumship and Power.
  • Position in the pattern series. William James is the bridge. KeplerBoyleNewtonFaradayMaxwellKelvinJamesJung / Pauli / Schrödinger / Bohm / Heisenberg / Wigner / Eccles / Penrose / Lucadou. James connects the two phases biographically and thematically – as the man whose student carried out the break and whose death in 1910 closed the American window.

Including William James does not mean judging the Principles of Psychology differently. It means reading them in the framework in which their author produced them – as part of a unified, methodologically careful, twenty-five-year-sustained investigation of human consciousness, in which experimental perception psychology and ASPR mediumship research were two working lines of the same research programme. Whoever omits this from the reading reads not James but a reception – the reception that his own student set in motion in 1909 and that the American psychology textbook has carried forward ever since.

Sources

  • William James: The Principles of Psychology. 2 vols., Henry Holt & Company, New York 1890 – the discipline-founding main work of American psychology.
  • William James: The Will to Believe and Other Essays in Popular Philosophy. Longmans, New York 1897.
  • William James: The Varieties of Religious Experience. A Study in Human Nature. Longmans, New York 1902 – the Gifford Lectures 1901/02 in Edinburgh.
  • William James: Pragmatism. A New Name for Some Old Ways of Thinking. Longmans, New York 1907.
  • William James: The Energies of Men. Philosophical Review 16/1, January 1907, and as a separately printed pamphlet 1908.
  • William James: A Pluralistic Universe. Longmans, New York 1909 – the Hibbert Lectures 1908 in Manchester.
  • William James: The Final Impressions of a Psychical Researcher. American Magazine 68, October 1909, pp. 580–589.
  • William James: Essays in Psychical Research. Ed. Frederick H. Burkhardt, Harvard University Press, Cambridge MA 1986 (critical complete edition of the psychical-research writings).
  • Robert D. Richardson: William James: In the Maelstrom of American Modernism. Houghton Mifflin, Boston 2006 – today's standard history-of-science biography.
  • Eugene Taylor: William James on Consciousness Beyond the Margin. Princeton University Press 1996 – the standard work on James's psychical-research line.
  • Krister Dylan Knapp: William James. Psychical Research and the Challenge of Modernity. University of North Carolina Press, Chapel Hill 2017.
  • Andreas Sommer: Psychical research and the origins of American psychology: Hugo Münsterberg, William James and Eusapia Palladino. History of the Human Sciences 25/2, 2012, pp. 23–44.
  • Alan Gauld: The Founders of Psychical Research. Routledge & Kegan Paul, London 1968 – with an extensive Piper chapter.
  • Society for Psychical Research, London: Proceedings of the SPR, from 1882 – primary sources of the Piper investigations.