Theodor W. Adorno

Theodor W. Adorno (; ; born Theodor Ludwig Wiesengrund; 11 September 1903 – 6 August 1969) was a German sociologist, philosopher, composer, and music theorist. 
He designed the F-scale with other researchers at the University of California. This scale tried to measure "the authoritarian personality", the "F" standing for "Fascist". He wrote about this in the 1950 book "The Authoritarian Personality." He was a Marxist.