General semantics is a self improvement and therapy program begun in the 1920s that seeks to regulate human mental habits and behaviors. After partial launches under the names human engineering and humanology, Polish-American originator Alfred Korzybski (1879–1950) fully launched the program as general semantics in 1933 with the publication of Science and Sanity: An Introduction to Non-Aristotelian Systems and General Semantics.
In Science and Sanity, general semantics is presented as both a theoretical and a practical system whose adoption can reliably alter human behavior in the direction of greater sanity. In the 1947 preface to the third edition of Science and Sanity, Korzybski wrote: "We need not blind ourselves with the old dogma that 'human nature cannot be changed', for we find that it can be changed." However, in the opinion of a majority of psychiatrists, the tenets and practices of general semantics are not an effective way of treating patients with psychological or mental illnesses. While Korzybski considered his program to be empirically based and to strictly follow the scientific method, general semantics has been described as veering into the domain of pseudoscience.
Starting around 1940, university English professor S. I. Hayakawa (1906–1992), speech professor Wendell Johnson, speech professor Irving J. Lee, and others assembled elements of general semantics into a package suitable for incorporation into mainstream communications curricula. The Institute of General Semantics, which Korzybski and co-workers founded in 1938, continues today. General semantics as a movement has waned considerably since the 1950s, although many of its ideas live on in other movements, such as neuro-linguistic programming and rational emotive behavior therapy.
In the 1946 "Silent and Verbal Levels" diagram, the arrows and boxes denote ordered stages in human neuro-evaluative processing that happens in an instant. Although newer knowledge in biology has more sharply defined what the text in these 1946 boxes labels "electro-colloidal," the diagram remains, as Korzybski wrote in his last published paper in 1950, "satisfactory for our purpose of explaining briefly the most general and important points." General semantics postulates that most people "identify," or fail to differentiate the serial stages or "levels" within their own neuro-evaluative processing. "Most people," Korzybski wrote, "identify in value levels I, II, III, and IV and react as if our verbalizations about the first three levels were 'it.' Whatever we may say something 'is' obviously is not the 'something' on the silent levels."