Question: American Libertarian, political scientist, author, and columnist, Charles Murray, who was also involved with the cognitive elite of a society, those having higher intelligence levels and thus better prospects for success in life, published what book in 1984? 
Sentence (from "Charles Murray (political scientist)"): Charles Alan Murray ( ; born January 8, 1943) is an American Libertarian, political scientist, author, and columnist.
Relevant evidence: Yes