Lynn and Vanhanen test the hypothesis on the causal relationship between the average national intelligence (IQ) and the gap between rich and poor countries by e

Argues that a significant part of the gap between rich and poor countries is due to differences in national intelligence.

Over the last few decades, economists and psychologists have quietly documented the many ways in which a person's IQ matters. But, research suggests that a nati

Nations can vary greatly in their wealth, democratic rights and the wellbeing of their citizens. These gaps are often obvious, and by studying the flow of immig