David Rosenhan and colleagues conducted a study examining the biasing power of diagnostic labels. They went to mental hospital admissions offices and complained of "hearing voices" saying "empty," "hollow," and "thud." This was the only complaint they reported and displayed no other symptoms. They were all .
A. diagnosed as mentally ill and the causes for their disorders were "discovered." .
B. initially diagnosed as mentally ill, but released immediately. .
C. found to be sane, and not admitted into the hospital. .
D. sued by the hospital for pretending to be mentally ill.
