A doctor or psychiatrist may say that a delusion is false, because it "seems" to be unlikely or bizarre.Psychiatrists rarely have the time or resources to check the validity of a person’s claims; this means that some true beliefs are erroneously classified as delusional. This is known as the Martha Mitchell effect, after the wife of the attorney general who alleged that illegal activity was taking place in the White House. At the time her claims were thought to be signs of mental illness. Only after the Watergate scandal was she proved right, and sane.