Except for Dr Freud, no one has influenced modern dream studies more than Carl Jung. A psychoanalyst based in Geneva, Switzerland, Jung (1875 -1961) was a friend and follower of Freud but soon developed his own ideas about how dreams are formed. While depth psychology has fallen out of favor in neuroscience, Jung’s ideas are still thriving in contemporary psychoanalytic circles. Popular applications directly based on Jung’s research include the Myers-Briggs Personality Type Indicator, the polygraph (lie detector) test, and 12-step addiction recovery programs.