DISC assessment DISC assessment DISC is a behavior assessment tool based on the DISC theory of psychologist William Moulton Marston, which centers on four different personality traits which are currently Dominance (D), Influence (I), Steadiness (S), and Conscientiousness (C). This theory was then developed into a behavioral assessment tool by industrial psychologist Walter Vernon Clarke. Marston was a lawyer and a psychologist; he also contributed to the first polygraph test, authored self-help books and created the character Wonder Woman. His major contribution to psychology came when he generated the DISC characteristics of emotions and behavior of normal people (at the time, 'normal'
Polygraph Information Test) for criminal investigation. The High Court of Australia has not yet considered the admissibility of polygraph evidence. However, the New South Wales District Court rejected the use of the device in a criminal trial. In "Raymond George Murray" 1982 7A Crim R48, Sinclair DCJ refused to admit polygraph evidence tending to support the defense. The judge rejected the evidence because The Court cited, with approval, the Canadian case of "Phillion v R" 1978 1SCR 18. Lie detector evidence is currently inadmissible in New South Wales courts under the Lie Detectors Act 1983. Under the same act, it is