ELI5: Explain Like I'm 5

Rosenhan experiment

The Rosenhan Experiment was like when your teacher did a test to see if you could recognize your best friends in a class or not. But instead of friends, some grown-ups went to hospitals to check if doctors could tell if they were really sick or not.

The experiment took place a long time ago and it was done by a man named David Rosenhan. He wanted to test if hospitals and doctors could tell the difference between people who were sick and those who were just pretending to be sick.

So, David Rosenhan asked some of his friends to pretend that they were hearing voices in their heads. The voices were pretending to be mean and nasty, telling them to do bad stuff. When they went to the hospital, they acted very scared and worried. They told the doctors and nurses about the voices they were hearing.

The doctors and nurses in the hospital didn't know the truth about the experiment. They ran some tests on the people who said they heard voices. After that, they put them in the hospital, thinking they were sick with a mental illness.

Once the people were inside the hospital, they stopped pretending to hear voices. They acted like themselves and tried to find a way to get out. But doctors kept taking notes saying they were getting worse, even if they weren't sick at all.

It took a long time for the people in the hospital to convince doctors that they were, in fact, normal and healthy people. Some of them had to stay a long time in the hospital even though they were never sick!

This experiment shows that sometimes doctors and hospitals can't always tell if people are really sick or not. It's important for doctors to be careful and make sure they check everything before saying someone is sick.
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