(IMAGE) University of Vienna Caption A team led by Martin Voracek of the University of Vienna has analyzed intelligence tests over a period of more than one hundred years. Credit Copyright: University of Vienna Usage Restrictions The image may only be used with appropriate caption or credit. License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.