1863 – Born on September 10th in London, England. British psychologist who theorized that a general factor of intelligence, g, is present in varying degrees in different human abilities.
1883 – While serving as an officer in the British army, Spearman came to believe that any significant advance in philosophy would come about mainly through psychology.
1904 – Charles Spearman received his doctorate from Leipzig.
– He published General Intelligence Objectivity Determined and Measured considered a great landmark in the history of psychology. Spearman speculated that all intellective functioning was underpinned by an overall mental ability accompanied by specific abilities for differing mental tasks.
1911 – He took over the department of experimental psychology only to become Grote Professor of Mind and Logic.
1927-1931 – Wrote the books: The Abilities of Man, then The Nature of Intelligence and the Principles of Cognition and Creative Mind.
1937 – Psychology Down the Ages was the final piece, in it was a complete account of main psychological theories from the beginning of time to his day.
1945 – Died on September 17th in London.