Classic study Rosenhan
Aim
At the time of Rosenhan’s study, there were growing concerns about the validity and reliability of diagnoses for mental illness. Inspired by the ‘anti-psychiatry’ movement of the time, the aim of Rosenhan’s study was to find out whether mental health professionals could distinguish between those who were genuinely mentally ill and those who were not.
Procedure
· Rosenhan’s study was a combination of a field experiment and a participant observation. · It took place in 12 psychiatric hospitals that varied in size and location. The sample was 8 ‘pseudopatients’ (5 men, 3 women) from various occupations including a painter, housewife and some psychologists including Rosenhan himself. None had ever been diagnosed with a mental illness and were obtained using opportunity sampling. · The procedure began with the pseudopatients calling up various hospitals for an appointment and complaining of ‘hearing voices’ (auditory hallucinations) and said they could hear the words ‘empty’ ‘thud’ and ‘hollow’. As a result, 7 pseudopatients were admitted to the hospitals with a diagnosis of schizophrenia and 1 was admitted with a diagnosis of manic depression with psychosis. · They described their mental state accurately, acted normally with both staff and genuine patients, accepted but did not take medication given to them, and did not report any more symptoms. · The pseudopatients observed the behaviour of the staff (doctors and nurses) and tried to interview them and recorded their responses as well as comments by genuine patients. They gathered both quantitative and qualitative data. Hospital authorities were informed of the study, but managers were not. · A follow-up study took place in another hospital after the staff asked Rosenhan to send more pseudopatients over there over a period of three months, claiming they would definitely notice whether or not they were real or fake patients. Rosenhan did not actually send any patients.
Results
The quantitative findings were that the pseudopatients were hospitalised between 7 and 52 days (averaging 19 days) prior to being considered sane enough to be discharged. · No doctors or nurses questioned their genuineness. In some hospitals, genuine patients questioned the pseudopatients as they thought they may have been journalists. · In 4 of the 12 hospitals, no staff answered the pseudopatients when they asked them questions. It was found that 71% of doctors and 88% of nurses and other staff ignored the pseudopatient when questioned. · The qualitative findings were that three ‘normal’ behaviours were misinterpreted as ‘abnormal’, including note writing being interpreted by a nurse as ‘engaging in writing behaviour’ as though it was something only a person with a mental illness would do. Another interpreted pacing up and down as a sign of nervousness, when the pseudopatient was just bored. · The follow-up study showed that out of 193 cases, 41 of the patients were identified as being fake by at least one staff member, and 23 were suspected as being fake by a psychiatrist, when in fact Rosenhan did not send any pseudopatients.
Conclusion
From these results it can be concluded that mental health professionals cannot distinguish between real and false patients, and they were willing to make a diagnosis based on one fake symptom. ‘Normal’ behaviour was misinterpreted as ‘abnormal’ to support their idea that the pseudopatients had a mental illness. This suggests the validity of psychiatric diagnoses was low. Ironically, due to the consistency of diagnoses they are reliable but incorrect.
AO3- STRENGTH
· A strength of Rosenhan’s study was that it had high internal validity.
· The doctors and nurses in the 12 hospitals were unaware they were being observed by the pseudopatients and therefore it is likely that they treated the them in exactly the same way as they would have treated any of their real patients.
· This lack of demand characteristics means that the study is very useful in highlighting issues surrounding the difficulty of diagnosing mental disorders.
AO3- WEAKNESS
· A weakness of Rosenhan’s study was that it was ethnocentric.
· The study was conducted across 12 hospitals in five states of America and focused on the use of the DSM-II manual for diagnosing mental disorders.
· This is a weakness because other cultures may not use the DSM-II manual and also may not share the westernised view of some symptoms, particularly hallucinations, so we cannot assume that the process of diagnosing mental disorders will show similar problems in other cultures and countries.