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State IQ and Fertility in the United States

Steven M. Shatz

Published: 2008/09/01

Abstract

The relationship between IQ and fertility was examined at the state level within the USA. As predicted, SAT-derived state IQ scores were negatively correlated with three different indicators of state fertility rates. The IQ-fertility relationship remained relatively unchanged when demographic and educational characteristics of the states were controlled for. Limitations and possible causal hypotheses are discussed.

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