Dr. William Marston, a behavioral psychologist, started to expand on theories of Sigmund Freud and Carl Jung in 1923, and later published a book called “Emotions of Normal People” in 1928.This book incorporated theories of human temperaments into his ground-breaking, four-quadrant behavioral model, DISC theory.

Marston’s DISC model looks at two dimensions, with one dimension stretching from introversion to extraversion and another dimension from task-oriented to people-oriented. When crossed, these dimensions make up the four quadrants of behavior. Marston did not create an assessment from his theory, but many others have created DISC assessments based on his behavioral model. You may even discover different kinds of DISC tests in the marketplace based on different interpretations of Marston’s theory.

Human behavior is not cut and dry or black and white. DISC theory consists of a combination of these behavioral styles and personality traits. Walter Clarke was the first to create a true DISC test in 1956 and John G. Geier, Ph.D., is credited with developing much of the final instrument framework we know of today as the DISC personality test.

One of WizeHire’s co-founders, Jay Niblick, created our own proprietary version of the DISC Plus assessment that is currently used by over 10,000 organizations in more than 50 countries and has been translated into 13 languages. In fact, more than 7,000,000 employees have benefited from its insights. It is the most modern, valid, and advanced interpretation of Dr. Marston’s work. It has been expanded to include an additional assessment that measures personal drivers and motivators called the Values Index. This addition of motivators makes WizeHire’s DISC profile the most thorough and powerful version in the market.