Some articles on pseudopatients:

Rosenhan Experiment - The Pseudopatient Experiment
... and seven mentally healthy associates, called "pseudopatients", attempted to gain admission to psychiatric hospitals by calling for an appointment and ... The pseudopatients included a psychology graduate student in his twenties, three psychologists, a pediatrician, a psychiatrist, a painter and a housewife ... Pseudopatients used pseudonyms, and those who worked in the mental health field were given false jobs in a different sector to avoid invoking any special treatment or scrutiny ...