The g factor : the science of mental ability

Jensen provides a comprehensive treatment of one of the major constructs of behavioral science--general mental ability--labeled the g factor by its discoverer, Charles Spearman. The g factor is about individual differences in mental abilities. In factor analyses of any and every large and diverse collection of measures of mental abilities, however varied the content of knowledge and skills they call upon, g emerges as the largest, most general source of differences between individuals and between certain subpopulations.

Jensen fully and clearly explains the psychometric, statistical, genetic, and physiological basis of g , as well as the major theoretical challenges to the concept. For decades a key construct in differential psychology, the g factor's significance for scholars and researchers in the brain sciences as well as education, sociology, anthropology, evolutionary psychology, economics, and public policy is clearly evident in this, the most comprehensive treatment of g ever published.

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Undoubtedly the world's foremost psychometrician, Jensen offers his long-overdue perspective on human intelligence in this book. Tracing the history of cognitive measurement, the first few chapters present clear and convincing evidence of the soundness of human intelligence research and its close association with the development of statistical analysis. Jensen presents his well-supported arguments for a primarily hereditary intelligence and the existence of a general or "g" intelligence factor in a way that any reader can understand. Indeed, this book is difficult to put down, despite the subject matter: Jensen does the impossible by making a book about psychological measurement interesting. Though the book will no doubt be politically controversial, readers will have difficulty arguing with Jensen's scholarly, scientific approach. To deny the rationality of Jensen's treatise is to admit a lack of objectivity on the part of the reader. Jensen should have published this book before Richard J. Herrnstein and Charles Murray published The Bell Curve (CH, May'95). Upper-division undergraduates through professionals. J. D. Cupp; Tennessee Technological University

Preface	p. ix
Acknowledgments	p. xiii
Chapter 1. A Little History	p. 1
Chapter 2. The Discovery of g	p. 18
Chapter 3. The Trouble with "Intelligence"	p. 45
Chapter 4. Models and Characteristics of g	p. 73
Chapter 5. Challenges to g	p. 105
Chapter 6. Biological Correlates of g	p. 137
Chapter 7. The Heritability of g	p. 169
Chapter 8. Information Processing and g	p. 203
Chapter 9. The Practical Validity of g	p. 270
Chapter 10. Construct, Vehicles, and Measurements	p. 306
Chapter 11. Population Differences in g	p. 350
Chapter 12. Population Differences in g: Causal Hypotheses	p. 418
Chapter 13. Sex Differences in g	p. 531
Chapter 14. The g Nexus	p. 544
Appendix A. Spearman's "Law of Diminishing Returns"	p. 585
Appendix B. Method of Correlated Vectors	p. 589
Appendix C. Multivariate Analyses of a Nexus	p. 593
References	p. 597
Name Index	p. 635
Subject Index	p. 643

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