This work tests the hypothesis on the causal relationship between the average national intelligence (IQ) and the gap between rich and poor countries by empirical evidence. Based on a survey of national IQ tests, the results challenge previous theories of economic development.
RICHARD LYNN is Professor Emeritus of Psychology, University of Ulster, Northern Ireland. Now with the Whitfield Institute, among Professor Lynn's earlier publications are Dysgenics (Praeger, 1996) and Eugenics (Praeger, 2001). TATU VANHANEN is Professor Emeritus, Department of Political Science, University of Tampere and Docent Emeritus, Department of Political Science, University of Helsinki, Finland. The author of four earlier books, he concentrates on the comparative study of democratization, evolutionary roots of politics, and ethnic nepotism and conflicts.