Who's crazy here, anyway? In this study conducted by DL Rosenhan, the following question is raised: Are mental health professionals really able to tell who is mentally healthy and who is mentally ill? And what are the consequences of errors? To answer these questions, Rosenhan himself and eight other “pseudopatients” showed up at several psychological hospitals behaving normally, as well as pretending to hear voices saying the same three words; they were all admitted. The goal of the pseudopatients once admitted was to convince the staff that they were mentally healthy. The hospital staff could not locate the patients but, interestingly, the other patients found out quite easily. Although there was a serious lack of personal contact between staff and patients, there was no such lack of medications (the pseudopatients and many of the real patients flushed their pills down the toilet). One of the pseudopatients even noticed that a nurse unbuttoned her uniform to adjust her bra in front of a common room of male patients; she had no intention of being provocative, but simply did not see patients as “real people” (Hock 2009). Rosenhan's study is fundamental to the world of psychology because it produced two main findings: 1) it appeared that sane people could not be distinguished from the "insane" and 2) it demonstrated the danger and harm that diagnostic labels can cause. Rosenhan's work has led to increased care in diagnostic procedures and increased awareness of the harmful effects of patient labeling, as well as a decrease in hospital populations, an increase in antipsychotic medications, and an increase in mental health facilities that focus on specific problems and tend to avoid labels (Hock 2009). In the study “Listen to my…… half of the paper…… history of psychological research (6th ed.). Upper Saddle River, NJ: Prentice Hall. Klein, P. D. (1997). Multiplying intelligence problems by eight: A critique of Gardner's theory. Canadian Journal of Education, 22(4), 377-394.Lester, H., & Trotter, J. Q. (2005). 'Listen to my madness': Understanding the experiences of people with serious mental illness. Sociology of health and well-being, 27(5), 649-699. http://dx.doi.org/10.1111/j.1467-9566.2005.00460.xLilienfeld, S. O., Wood, J. M., & Garb, H. N. (2000). The scientific status of projective techniques [Abstract]. Psychological Science in the Public Interest, 1(2), 27-66. http://dx.doi.org/10.1111/1529-1006.002Parsons, L. M., Gabrieli, J. D. E., Phelps, E. A., & Gazzaniga, M. S. (1998). Cerebral lateralized mental representations of hand shape and movement. The journal of neuroscience, 18(16), 6539-6548.