Understand man pretending or not, it is very difficult, especially when it comes to such fine things as mental insanity.
Most often depict people crazy to avoid responsibility for serious crimes, and sometimes - to demonstrate the imperfection of the methods of psychiatry, and that's a curious case.
In the 1970s, a psychologist at Stanford University, David Rouznan put an interesting experiment: five completely healthy people trying to register with in psychiatric institutions in five different states, telling doctors that experiencing hallucinations.
All volunteers were hospitalized with a diagnosis of "mental illness" and then began to behave like a completely normal people. Gradually, the fact of "improvement" was recorded by psychiatrists, but leave the hospital walls experiment participants could only recognize the existence of a mental disorder in the past, that is, agreeing with the official diagnosis of "schizophrenia».
Staff at one clinic did not believe that Rouznan swept them around your finger: they are asked to send another "crazy", and this time the commission was intended to identify any signs of simulation - the psychologist said that the experiment continues. Over the next three months, of the 193 enrolled patients, psychiatrists recognized deceivers 41 th, and 42 more were under suspicion, but Rouznan admitted that he had not sent anyone or.