Arthur Jensen
Arthur Robert Jensen (August 24, 1923 – October 22, 2012) was an American psychologist and writer. He was a professor of educational psychology at the University of California, Berkeley.  Jensen was known for his work in psychometrics and differential psychology. He was the author of over 400 scientific papers published in refereed journals. He sat on the editorial boards of the scientific journals Intelligence and Personality and Individual Differences''.