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The Cult Dossier · No. 162 · Psychiatry / The Asylum

The Rosenhan Experiment

On Being Sane in Insane Places

1973 (challenged from 2019) · United States

XV. THE ASYLUM — WHEN MEDICINE DECIDED WHOSE MIND WAS WRONG

None.

Who led it

DAVID L. ROSENHAN (1929–2012), professor of psychology and law at Stanford. The principal challenge to his work is SUSANNAH CAHALAN'S THE GREAT PRETENDER (2019).

What it worshipped and taught

The published claim: that psychiatric diagnosis could not distinguish the sane from the insane, and that once labelled, a person's ordinary behaviour would be read as illness. IT IS ONE OF THE MOST INFLUENTIAL PAPERS IN THE HISTORY OF PSYCHIATRY, AND IT MAY BE SUBSTANTIALLY FABRICATED.

Who was in it

David Rosenhan; BILL UNDERWOOD, a pseudopatient Cahalan located; HARRY LANDO, a pseudopatient whose data was excluded; Susannah Cahalan.

How it ended, or where it stands

STILL TAUGHT, NOW WITH AN ASTERISK. The paper has not been retracted; Science has not withdrawn it; and it remains in textbooks, usually without the 2019 findings attached.

The dead

—

Of note

THIS FILE IS HERE AS MUCH FOR ITS METHOD AS FOR ITS SUBJECT, BECAUSE IT IS THIS DOSSIER'S OWN PROBLEM IN MINIATURE.

A claim that everyone knows, that appears in every textbook, that changed a profession — and when somebody finally went to the archive and checked, most of the evidence was not there. THAT IS EXACTLY THE FAILURE MODE THIS DOSSIER WAS AUDITED FOR. See the corrections log in Appendix H for the same thing happening in these files.

WHAT MAKES IT GENUINELY HARD IS THAT ROSENHAN'S CONCLUSION MAY STILL BE RIGHT. NELLIE BLY demonstrated the same thing in 1887 with a witness and a grand jury (156), and no one disputes her account. Diagnostic reliability in that era really was poor, by psychiatry's own later admission. SO THE FINDING SURVIVES ITS EVIDENCE, which is an uncomfortable position and the honest one.

THE RULE THIS FILE ENDORSES: a conclusion you believe is not a reason to accept the study that produced it. If the data was invented, the study is worthless even when the answer is correct — because the next time, the answer will not be.

Its timeline

  1. 19 JANUARY 1973 ON BEING SANE IN INSANE PLACES is published in SCIENCE. Rosenhan reports that EIGHT PSEUDOPATIENTS presented at TWELVE HOSPITALS, each saying only that they heard a voice saying empty, hollow or thud. All were admitted; seven were diagnosed with schizophrenia. They then behaved normally. Stays ranged from 7 to 52 days, averaging 19. ALL WERE DISCHARGED AS SCHIZOPHRENIA IN REMISSION — that is, still ill.
  2. 1973 A second, more damaging claim: a teaching hospital, told pseudopatients would be sent over three months, rated 41 of 193 new patients as impostors, with 42 more suspected. ROSENHAN SAID HE HAD SENT NOBODY.
  3. 1973–1980 The paper lands during a crisis of confidence in psychiatric diagnosis and becomes a standard citation for the unreliability of the categories. IT CONTRIBUTED MATERIALLY TO THE PRESSURE THAT PRODUCED DSM-III IN 1980, with its operational checklists — an irony, in that a study attacking diagnosis helped produce the most rigid diagnostic manual yet written.
  4. 2019 SUSANNAH CAHALAN PUBLISHES THE GREAT PRETENDER after years in Rosenhan's archive. She could identify only TWO of the eight pseudopatients: Rosenhan himself and BILL UNDERWOOD, a Stanford graduate student. She found a third, HARRY LANDO, WHOSE EXPERIENCE HAD BEEN POSITIVE AND WHO WAS LEFT OUT OF THE PAPER on the stated ground that he had falsified parts of his personal history. She found Rosenhan's own admission record, which showed he had reported far more than a single voice: months of symptoms, putting copper pots over his ears to drown out noises, and being suicidal for many months. She concluded that the remaining pseudopatients may never have existed.
  5. 2019–present Cahalan does not claim to have proved fabrication and this file does not either. WHAT IS ESTABLISHED IS THAT NO EVIDENCE INDEPENDENT OF ROSENHAN'S OWN ACCOUNT SUPPORTS THE EXISTENCE OF SIX OF THE EIGHT, and that at least one real participant was excluded for reporting the wrong result. Rosenhan took an advance for a book about the study and never finished it.
  6. FEBRUARY 2023 THE HISTORIAN ANDREW SCULL publishes ROSENHAN REVISITED: SUCCESSFUL SCIENTIFIC FRAUD in History of Psychiatry.

Its people

David Rosenhan

David L. Rosenhan

Author of On Being Sane in Insane Places · 22 November 1929 – 6 February 2012 · active 1973–2012

A Stanford professor of psychology and law whose 1973 paper in SCIENCE reported that eight pseudopatients gained admission to twelve psychiatric hospitals by claiming to hear a voice saying empty, hollow or thud, then behaved normally and were held an average of 19 days, all discharged as schizophrenia in remission. IT BECAME ONE OF THE MOST INFLUENTIAL PAPERS IN PSYCHIATRY. In 2019 SUSANNAH CAHALAN, working in his archive, could verify only two of the eight, found a third whose positive experience had been excluded, and found Rosenhan's own admission record describing far more severe symptoms than the paper reported. He took an advance for a book about the study and never finished it.

Before the law. No proceedings. The paper has NOT been retracted and Science has not withdrawn it.

Where things stand. Deceased 2012, seven years before the archival findings were published, so HE NEVER ANSWERED THEM. This file does not assert that the study was fabricated; it records that the evidence for six of the eight participants cannot be found, and that one real participant was excluded for reporting the wrong result.

  1. 19 JANUARY 1973 ON BEING SANE IN INSANE PLACES published in Science.
  2. 1970s The paper contributes to the pressure that produced DSM-III in 1980.
  3. 1980s Contracted to write a book on the study; never delivers it and returns the advance.
  4. 2012 Dies.
  5. 2019 CAHALAN PUBLISHES THE GREAT PRETENDER, documenting that most of the pseudopatients cannot be shown to have existed.

Checked 2026-09-05

Susannah Cahalan

—

Journalist; author of The Great Pretender · born 1985 · active 2019–present

She wrote about it in BRAIN ON FIRE. That experience — of being one test away from lifelong psychiatric misdiagnosis — led her to Rosenhan, whose study she expected to confirm. INSTEAD SHE SPENT YEARS IN HIS ARCHIVE AND COULD NOT FIND SIX OF HIS EIGHT PSEUDOPATIENTS. THE GREAT PRETENDER (2019) reports that, and reports the excluded participant, HARRY LANDO, whose 19 days had been a positive experience.

Before the law. None.

Where things stand. Living. SHE HAS BEEN CAREFUL NOT TO CLAIM PROOF OF FABRICATION, and this file follows her in that. What is established is an absence of corroboration, plus one documented exclusion.

  1. 2009
  2. 2012 BRAIN ON FIRE published.
  3. 2019 THE GREAT PRETENDER published.

Checked 2026-09-05 · living: health details are kept at home

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