Ian J. Deary

This book introduces readers to the science of human intelligence for those who know little or nothing about it and helps them reach the point where they can evaluate the basic issues of mental capacity for themselves. Each chapter discusses an important scientific topic but does so in an engaging and perfectly understandable manner. Discussed topics include whether there are several types of intelligence, if environmental factors such as genes or environment have a role in intelligence disparities, the biological foundation of cognitive levels and whether intelligence decreases with age.