Intelligence, Race, and Genetics: Conversations with Arthur R. Jensen
Total Page:16
File Type:pdf, Size:1020Kb
INTELLIGENCE, RACE, AND GENET / ¿ n j e n FRANK MIELE A Member of the Perseus Books Group All rights reserved. Printed in the United States of America. No part of this publication may be reproduced or transmitted in any form or by any means, electronic or mechanical, including pho tocopy, recording, or any information storage and retrieval system, without perm ission in writing from the publisher. Copyright © 2 0 0 2 by Westview Press, A Member o f the Perseus Books Group Westview Press books are available at special discounts for bulk purchases in the United States by corporations, institutions, and other organizations. For more information, please contact the Special Markets Department at the Perseus Books Group, 11 Cambridge Center, Cambridge MA 02142, or call (617) 252-5298. Published in 2 0 0 2 in the United States o f America by Westview Press, 5 5 0 0 Central Avenue, Boulder, Colorado 80301-2877, and in the United Kingdom by Westview Press, 12 Hid’s Copse Road, Cumnor Hill, Oxford OX2 9JJ Find us on the World Wide Web at www.westviewpress.com A Cataloging-in-Publication data record for this book is available from the Library o f Congress. ISBN 0-8I33-4008-X The paper used in this publication meets the requirements o f the American National Standard for Permanence of Paper for Printed Library Materials Z39.48-I984. 10 98765432 1—05 04 03 02 To my late father, Edward J . Miele, and my mother, Cecilia Miele, who gave me both my genes and my environment; and to my brother, Edward F. Miele, who shares them with me. CONTENTS Preface IX Acknowledgments XI INTRODUCTION Jensenism and Skepticism I PRELUDE The Man Behind the “Ism’ 7 1 UENSENISM A New Word in the Dictionary 17 2 WHAT IS INTELLIGENCE? T h e g Factor and Its Rivals 43 3 NATURE, NURTURE,OR BOTH? Can Heritability Cut Psychology’s Gordian Knot? 69 4 WHAT IS RACE? Biological Reality or Cultural Construction? 109 5 FROM JE N S E N IS M TO THE BELL CURVE WARS Science, Pseudoscience, and Politics 147 6 SCIENCE AND POLICY What’s to Be Done? 171 Appendix A: Bibliography of Arthur R. Jensen 19 1 Appendix B : Mainstream Science on Intelligence 2 2 3 Index 2 3 1 vu PREFACE “Compensatory education has been tried and it apparently has failed.” With that opening sentence of a 123-page-long article solicited by the prestigious Harvard Educational Review, Professor Arthur R. Jensen, of the University o f California, Berkeley, went from being a highly respected but little-known educational psychologist to one of the most controversial fig ures in science. Written in 1969 during the tumultuous days of the rioting in the Black inner cities and W hite voter disenchantment with Lyndon Johnsons Great Society programs, Jensen’s HER article set off a firestorm of con troversy. T h e title, “H ow M uch Can We Boost IQ and Scholastic Achievement?” and Jensen’s conclusion, “N ot much,” made him a headlin er in Time, Newsweek, Life, U.S. News fir World Report, and The New York Times Magazine, on the one hand, and the target o f student protests, sit-ins, reso lutions of condemnation, and even acts o f vandalism and death threats on the other. The word “Jensenism”— shorthand for Jensen’s theory that an individual’s IQ is largely due to heredity, including racial heritage— found its way into som e dictionaries. In this book, I skeptically cross-examine Arthur R. Jensen on Jensenism— how and why he believes the scientific evidence is even stronger today that: • IQ is real, biological, and highly genetic, and not just some statistic or the result of educational, social, economic, or cul tural factors; IX X PREFACE • race is a biological reality, not a social construct; and, most controversially of all, • the cause of the 15-point average IQ difference between Blacks and Whites in the United States is partly genetic. The late Stephen Jay Gould’s Mismeasure of Man, Howard Gardners numerous books on “multiple intelligences,” and Joseph Graves’s The Emperor’s New Clothes argue that Jensenism and the controversial best-seller The Bell Curve (which draws heavily on Jensen’s work) are marginal science at best, pseudoscience at worst. Here, Jensen replies to these and other crit ics. He also answers the questions I think you yourself would like to ask him. He tells you why he believes the scientific basis of Jensenism is as solid as the Rock of Gibraltar, why the experts in the relevant disciplines o f behavior genetics and psychometrics agree with him and not his critics, and why the public has been so misinformed. This book also introduces you to Arthur Jensen, the man behind the “ism,” so that you can understand why he took up such a controversial research program and why he has pursued it so relentlessly. Finally, it takes you on the intellectual odyssey of the behavioral sciences over the past third of a century, detailing the sea changes that have taken place since Jensen and Jensenism first hit the front pages in 1969. Frank Miele Sunnyvale; California ACKNOWLEDGMENTS I could not have written this book without the help and encouragement that so many people have given me over the years. I would like to give par ticular thanks to publisher and editor-in-chief Michael Shermer and the staff o f Skeptic, to all those who have given so generously of their time in allowing me to interview them for the magazine, and to my editor Karl Yambert and the staff at Westview. Additionally, the photos in the book were provided by courtesy o f Arthur Jensen and the cover photo by cour tesy of Lois V Jensen, his sister, and I thank them for their permission to use the photos. F.M . INTRODUCTION Jensenism and Skepticism Jensenism, n: the theory that an individual’s IQ is largely due to heredi ty, including racial heritage; after Arthur R. Jensen (born 1923), U.S. educational psychologist, who first propounded this hypothesis in 1965. and Skepticism, n: the search for provisional, not metaphysical, truth through the continuous and vigorous application of the methods of science, that is, formulating hypotheses and gathering data against which to test them. ensenism and skepticism— what’s the connection? W hat does a controversial J theory linking intelligence, race, and genetics have to do with a grow ing movement that promotes better understanding o f the scientific method and greater use o f critical thinking by the general public? O n the one hand, one skeptic icon, the late Stephen Jay Gould, who was then America’s best-known science writer, a distinguished though contro versial scientist in his own right, and a past president of the American Association for the Advancement of Science, once claimed to have debunked Jensenism as resting on “a rotten edifice.” On the other, Intelligence, the most prestigious journal in the field of IQ research, devoted an entire issue to honoring Jensen and his work, which its editor, Douglas Detterman, titled “A King Among Men: Arthur Jensen.” I 2 INTELLIGENCE, RACE, AND GENETICS If these wildly varying assessments of Arthur R. Jensen and his theo ries o f race, genetics, and human intelligence don’t invite a skeptical exami nation and some critical thinking, what does? As senior editor o f Skeptic, I’ve interviewed some o f the world’s leading scholars on differing sides of the race-IQ issue and related controversies in biological and behavioral sciences. W ho better to interview than the namesake o f the most controversial “ism” o f them all— the relation between race, intelligence, and genetics? I realized that a fair treatment o f Jensen and Jensenism would require a book, not just an article. Jensen accepted, but could he commit the time? That year, 1999, he was based in London, England, working at the Galton Library on biographies of Charles Spearman and Hans Eysenck commis sioned by the American Psychological Association (APA) and delivering the annual Galton Lecture as well as invited lectures at universities and research institutes in the United Kingdom, Denmark, Germany, Austria, Italy, and Spain. It wasn’t possible for me to spend the year in Europe attending the lectures while we did the interviews. Even long-distance phone calls pre sented a difficulty because o f the eight-to-nine-hour time difference, and they would be a budget buster. So we decided to conduct the conversations via E-mail. I wrote a series of questions on a particular topic, and Jensen replied. We had our printed transcript proofed, but the only other modifi cations are those requested by the publisher, Westview Press, to remove rep etition, to clarify some of the more technical passages, or to update infor mation and references to the scientific literature where appropriate. Many reject Jensenism without examining the evidence because they fear what might follow if it gained widespread public acceptance. I want you to be able to decide for yourself whether Jensenism represents one man’s search for provisional, not metaphysical, truth through the continu ous and vigorous application o f the methods o f science, that is, by for mulating hypotheses and gathering data against which to test them, or a dangerous diversion back down a blind alley o f old and disproven ideas, deceptively dressed up in modern scientific jargon. The Prelude introduces you to “the man behind the ‘ism.’” It includes a biographical and professional sketch of “Jensen before Jensenism.” Chapter I, “Jensenism: A New Word in the Dictionary,” provides a perspective on “Jensenism” and explains how a well-respected and previ INTRODUCTION 3 ously noncontroversial educational psychologist gave rise to a controversial word in the dictionary.