G-Man (slang) G-Man (slang) G-Man (short for "Government Man") is an American slang term for special agents of the United States Government. It is specifically used as a term for a Federal Bureau of Investigation (FBI) agent. "G-Man" is also a term used for members of G Division, essentially a British anti-rebel police unit operating out of Dublin Castle prior to Irish Independence in 1922. Colonel Ned Broy uses the term in his official testimony for the Irish Army's Bureau of Military History in their archive of the Easter Rising (1916) and the Irish War of Independence (1919-1921). According to the "Merriam-Webster
The g Factor: The Science of Mental Ability origins of "g" in terms of evolutionary biology and neurophysiology. "The g Factor" was reviewed favorably by Canadian psychologist J. Philippe Rushton, who called it "an awesome and monumental exposition of the case for the reality of g." Robert Sternberg was more critical in his review, writing that "there is a great deal of evidence of various kinds that the general factor does not do what Jensen claims." He also acknowledged that "Even those who disagree with most of what Arthur Jensen says in The g Factor, such as myself, have to admire the sheer dedication, pertinacity, and tireless scholarship