Best Answer: St. Augustine (Florida) is the oldest continually occupied European settlement in the continental United States, only San Juan, Puerto Rico predates the city as the oldest settlement within the territory of the United States.
Finally in 1980 the American Psychiatric Association officially recognized multiple personality disorder as a genuine emotional illness. Today, MPD is a relatively popular diagnosis with 20,000 cases recorded between 1980 and 1990. Researchers currently believe that from 0.01-10% of the general population has this mental illness.
In the 1970s, Nancy Andreasen carried out the first empirical study of creativity and mental disorder at the University of Iowa. Andreasen studied the mental histories of a group of 30 prominent authors, expecting to find a strong correlation between creativity and schizophrenia.