Psychose.de - Informationsangebot. Psychose, Bipolare Störung, S. Personality Disorder Information. Rosenhan experiment. Experiment to determine the validity of psychiatric diagnosis Rosenhan's study was done in eight parts.
The first part involved the use of healthy associates or "pseudopatients" (three women and five men, including Rosenhan himself) who briefly feigned auditory hallucinations in an attempt to gain admission to 12 psychiatric hospitals in five states in the United States.