Introduction (M. Rutter).

Intelligence: Success and Fitness (D. Lubinski).

The g Factor: Psychometrics and Biology (A. Jensen).

Psychometric Intelligence Differences and Brain Function (I. Deary).

The g Factor in Non-Human Animals (B. Anderson).

Natural Selection, Mental Modules and Intelligence (R. Nesse).

g and the One—Many Problem: Is One Enough? (N. Brody).

General Intelligence and the Definition of Phenotypes (D. Detterman).

Is there a g Factor for Fitness? (D. Houle).

How can Psychological Adaptations be Heritable? (J. Bailey).

Social Complexity and Social Intelligence (A. Whiten).

IQ Gains, WISC Subtests and Fluid g: g Theory and the Relevance of Spearman's Hypothesis to Race ( J. Flynn).

Mutation, Selection and the Heritability of Complex Traits (A. Pomiankowski).

The Quantitative and Molecular Genetics of Human Intelligence (P. McGuffin).

Sexual Selection for Indicators of Intelligence (G. Miller).

Final General Discussion.

Closing Remarks (M. Rutter).

Index of Contributors.

Subject Index.