James R. Allen, is a "cognitive-behavioral approach to treatment and that it is a very effective way of dealing with internal models of self and others as well as other psychodynamic issues.". Around the 1970s, a growing number of researchers began departing from the psychodynamics model and Freudian subconscious. Many felt that the evidence was over-reliant on imaginative discourse in therapy, and on patient reports of their state-of-mind. These subjective experiences are inaccessible to others. Philosopher of science Karl Popper argued that much of Freudianism was untestable and therefore not scientific. In 1975 literary critic Frederick Crews began a decades-long campaign against the scientific credibility of Freudianism. This culminated in Freud: The Making of an Illusion which aggregated years of criticism from many quarters. Medical schools and psychology departments no longer offer much training in psychodynamics, according to a 2007 survey. An Emory University psychology professor explained, “I don’t think psychoanalysis is going to survive unless there is more of an appreciation for empirical rigor and testing.” Freudian analysis According to American psychologist Calvin S. Hall, from his 1954 Primer in Freudian Psychology: At the heart of psychological processes, according to Freud, is the ego, which he sees battling with three forces: the id, the super-ego, and the outside world. Hence, the basic psychodynamic model focuses on the dynamic interactions between the id, ego, and superego. Psychodynamics, subsequently, attempts to explain or interpret behavior or mental states in terms of innate emotional forces or processes. In his writings about the "engines of human behavior", Freud used the German word Trieb, a word that can be translated into English as either instinct or drive. In the 1930s, Freud's daughter Anna Freud began to apply Freud's psychodynamic theories of the "ego" to the study of parent-child attachment and especially deprivation and in doing so developed ego psychology. Jungian analysis At the turn of the 20th century, during these decisive years, a young Swiss psychiatrist named Carl Jung had been following Freud's writings and had sent him copies of his articles and his first book, the 1907 Psychology of Dementia Praecox, in which he upheld the Freudian psychodynamic viewpoint, although with some reservations. That year, Freud invited Jung to visit him in Vienna. The two men, it is said, were greatly attracted to each other, and they talked continuously for thirteen hours. This led to a professional relationship in which they corresponded on