“…By leaving the patients on phenothiazines, it was possible to avoid selecting a biased sample consisting of only those patients who were well enough to be taken off drugs. A survey of the literature indicates that phenothiazines have no significant effects on memory (Daston, 1959;Gardiner, Hawkins, Judah, & Murphee, 1955;Helper, Wilcott, & Sol, 1963;Mason-Brown & Borthwick, 1957;Vestre, 1961).…”