Testing Children in Peru (IMAGE) Duke University Caption Duke researcher Helena Frischtak, (right front) administers psychological assessments with a pair of Peruvian children during a study of mercury contamination near small-scale gold mining. Credit William Pan, Duke University Usage Restrictions None 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.