In 1973 a study was published in Science where psychologist David Rosenhan revealed he had duped hundreds of psychiatric workers by planting perfectly sane pseudopatients within their hospitals and every last one went unnoticed.
# Stuff You Should Know Episode Summary
In this fascinating dive into one of psychology's most controversial studies, Josh and Chuck explore David Rosenhan's groundbreaking 1973 experiment that challenged the very foundation of psychiatric diagnosis. Rosenhan sent perfectly sane volunteers into psychiatric hospitals claiming to hear voices, and virtually all were admitted and diagnosed with schizophrenia—despite behaving completely normally once inside. What makes this episode truly gripping is the reversal: when a skeptical hospital challenged Rosenhan to send fake patients their way, he sent none, yet the staff flagged dozens of real patients as fakes, proving psychiatry couldn't reliably distinguish sanity from insanity in either direction.
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