In 1973, eight healthy people feigned a single hallucinatory symptom
The 1973 Rosenhan experiment sent eight healthy individuals to psychiatric hospitals, where they feigned a single hallucination before acting normally. All were admitted and diagnosed with mental illness, with stays lasting from 7 to 52 days, exposing flaws in psychiatric diagnosis.
Background
- The article refers to the famous **Rosenhan Experiment** (1973), conducted by Stanford psychologist David Rosenhan. Eight "pseudopatients" (including Rosenhan himself) faked hearing voices ("thud," "empty," "hollow") to gain admission to psychiatric hospitals, then acted normally once inside.<br/>- Key finding: Staff never saw through the ruse — **all pseudopatients were admitted and diagnosed with mental illness** (mostly schizophrenia), and were released only after weeks, with diagnoses of "schizophrenia in remission." This suggested that psychiatric labels override actual behavior.<br/>- The study shocked psychiatry and fueled the **anti-psychiatry movement**, becoming a staple critique of institutional diagnosis. It was published in *Science* as "On Being Sane in Insane Places."<br/>- Critics later pointed out flaws: hospitals knew Rosenhan might send pseudopatients (leading to false positives in some replications), and some argued the experiment showed natural caution by doctors rather than incompetence.<br/>- Rosenhan's work remains a landmark case in the debate over the validity of psychiatric diagnosis and the power of labeling.