Rosenhan Experiment

Definition and Objective

The Rosenhan Experiment was a significant psychological study conducted between 1969 and 1972 by psychologist David Rosenhan from Stanford University, aiming to question the reliability of psychiatric diagnoses. The findings of the study were published on 19 January 1973 in Science, one of the world’s most prestigious scientific journals, in an article titled On Being Sane In Insane Places. The experiment sought to test whether healthy individuals could be identified as mentally ill when admitted to psychiatric hospitals.

Structure of the Rosenhan Experiment

The Rosenhan Experiment was conducted in two phases to challenge the reliability of psychiatric diagnoses.

Phase One (Fake Patient Experiment):

David Rosenhan and seven healthy volunteers applied to various psychiatric hospitals as “fake patients.” During their initial evaluations, these individuals reported only a few specific symptoms—for example, claiming they heard vague, meaningless words such as “empty,” “hollow,” and “thud”—and exhibited no other signs of psychosis. All other aspects of their behavior were completely normal.

Despite this, all individuals were admitted to the hospitals and received various psychiatric diagnoses. Most were diagnosed with schizophrenia. Even after they ceased displaying any abnormal behavior, hospital staff continued to interpret their actions through the lens of their initial diagnosis, and none were able to convince staff of their mental health.

During their hospital stays, the patients’ behaviors were observed, but staff consistently interpreted them in ways consistent with the original diagnoses. Additionally, the experiment highlighted negative aspects of the psychiatric environment, including restrictions on personal freedom and difficulties in communication with hospital personnel.

One of the centers where the Rosenhan experiment took place (Washington D.C.)

Phase Two (Hospital Response Experiment):

One psychiatric hospital claimed to Rosenhan that it could identify fake patients and assured him it would detect any such individuals sent to its facility. In response, Rosenhan sent no fake patients at all. Nevertheless, during the specified time period, hospital staff identified 41 out of 193 admitted patients as potential fake patients.

Criticisms

The experiment faced criticism within the scientific community. In particular, its methodological limitations and ethical concerns were debated. Some critics questioned the generalizability of the results and argued that psychiatric practice required more careful and nuanced evaluation.