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 "Cognitive elite"): The cognitive elite of a society, according to Richard J. Herrnstein and Charles Murray, are those having higher intelligence levels and thus better prospects for success in life.
Relevant evidence: Yes