"Flynn is a cautious and careful writer. Unlike many others in I.Q. debates, he resists grand philosophizing. His books ("What Is Intelligence?") consist of a series of plainly stated statistical observations, in support of deceptively modest conclusions, and the evidence in support of Flynn's original observation is now so overwhelming that the Flynn effect has moved from theory to fact...average I.Q.s shift over time ought to create a "crisis of confidence," Flynn writes in "What Is Intelligence?", the latest attempt to puzzle through the implications of his discovery.The best way to understand why I.Q.s rise, Flynn argues, is to look at one of the most widely used I.Q. tests, the so-called WISC (for Wechsler Intelligence Scale for Children)."
--Malcolm Gladwell, The New Yorker
"It is not just the fascinating effect that makes the book special. It's also Flynn's style. There's an unusual combination of clarity, wit, apposite allusion, and farsightedness in making connections and exploring unexpected consequences. The Flynn effect, in Flynn's hands, makes a good, gripping, puzzling, and not-quite-finished story..."
--Ian Deary, Edinburgh University
"This book is a gold mine of pointers to interesting work, much of which was new to me. All of us who wrestle with the extraordinarily difficult questions about intelligence that Flynn discusses are in his debt.."
--Charles Murray, American Enterprise Institute & co-author of The Bell Curve
"This highly engaging, and very readable, book takes forward the Dickens/Flynn model of intelligence in the form of asking yet more provocative questions. . . A most unusual book, one that holds the reader's attention and leaves behind concepts and ideas that force us to rethink all sorts of issues.."
--Sir Michael Rutter, Kings College London
"Flynn provides the first satisfying explanation of the massive rise in IQ test scores. He avoids both the absurd conclusion that our great grandparents were all mentally retarded and the equally unsatisfactory suggestion that the rise has just been in performance on IQ tests without any wider implications.."
--N. J. Mackintosh, University of Cambridge
"Citing many scholarly works, Flynn paints a dynamic picture of what intelligence is and the role of a person's genetic background, physiology and neurology, immediate environment and broader social factors...he has produced an impressively multidimensional and often wise look at the elusive topic of human intelligence."
--Publisher's Weekly
"Mainstream IQ researchers, who are used to being demonized when they are not being ignored, admire Flynn, who is politically a man of the left, for his fairness, geniality, insight, and devotion to advancing knowledge."
--Steve Sailor, vdare.com
"In What is Intelligence? James R. Flynn...suggests that we should not faciley equate IQ gains with intelligence gains. He says that it's necessary to 'dissect intelligence' into its component parts: 'solving mathematical problems, interpreteing the great works of literature, finding on the spot solutions, assimilating the scientific worldview, critical acumen and wisdom.' When this dissection is carried out, several paradoxes emerge, which Flynn in this engaging book attempts to reconcile."
--Richard Restak, American Scholar
"The 20th century saw the "Flynn Effect" - massive gains in IQ from one generation to another."
--Scientific American Mind
"In a brilliant interweaving of data and argument, Flynn calls into question fundamental assumptions about the nature of intelligence that have driven the field for the past century. There is something here for everyone to lose sleep over. His solution to the perplexing issues revolving around IQ gains over time will give the IQ Ayatollahs fits!."
--S. J. Ceci, Cornell University
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