Richard Lynn and Tatu Vanhanen, IQ and Global Inequality, Washington Summit Books, Augusta, GA (2006) PB ISBN: 1-59368-024-4, $17.95; HB, ISBN: 1-59368-025-2, $34.95.
Näkemäni J. Philippe Rushtonin arvion mukaan "IQ and Global Inequality convincingly refutes those critics who asserted that national IQs lack reliability and validity. They have made what is arguably the most important contribution to economic understanding since Adam Smith showed that free markets promote economic development. They have also shown that national IQs explain much of the variation between nations in a wide range of economic and social phenomena. Their book extends the explanatory power of the concept of intelligence in a way that makes a major contribution to the integration of psychology with the other social sciences."
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