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'
William Moulton Marston was educated at Harvard University, graduating Phi Beta Kappa and receiving his B.A. in 1915, an LL.B. in 1918, and a PhD in Psychology in 1921. After teaching at American University in Washington, D.C., and Tufts University in Medford, Massachusetts, Marston traveled to Universal Studios in California in 1929, where he spent a year as Director of Public Services. Marston had 2 children each with both his wife Elizabeth Holloway Marston and partner Olive Byrne. Elizabeth supported the family financially while Olive Byrne stayed home to take care of all four children. Marston was the creator of the systolic blood