The legitimate part of the IQ tradition — fluid reasoning, working memory, executive function — pulled out of the knowledge-confounded mess that a hundred years of psychometric history made of cognition.
The Wechsler scales and the Stanford-Binet are the legitimate ancestors of the Reasoning Quotient. They measure something real. Their problem was never the measurement — it was the conflation: by treating reasoning and knowledge as the same construct, IQ as a single number became a referendum on cultural capital instead of cognitive capacity.
Cooper's RQ volume reclaims the legitimate piece. The Wason selection task, Kahneman's System 1 and System 2, the Cattell-Horn-Carroll separation of fluid and crystallized intelligence, frontoparietal executive networks. The book treats RQ as one of eight rather than as the standalone IQ replacement, which lets the frame breathe — high RQ paired with low EQ tells one story, high RQ paired with high SQ tells a very different one.
Short volume. Citation-dense. Companion to the main VQ-Trade book.
Cognitive-science readers, psychometricians, organizational psychologists, hiring managers.