Curtis credits the Rosenhan experiment with the inspiration to create a computer model of mental health. Input to the program consisted of answers to a questionnaire. Curtis describes a plan of the psychiatrists to test the computer model by issuing questionnaires to "hundreds of thousands" of randomly selected Americans. The diagnostic program identified over 50% of the ordinary people tested as suffering from some kind of mental disorder. According to Dr. Jerome Wakefield, who refers to the test as "these studies", the results it found were viewed as a general conclusion that "there is a hidden epidemic." Leaders in the psychiatric field never addressed whether the computer model was being tested or used without having been validated in any way, but rather used the model to justify vastly increasing the portion of the population they were treating.