Language development researcher (IMAGE) University of Massachusetts Amherst Caption Jill Hoover, associate professor in the UMass Amherst School of Public Health and Health Sciences, is co-lead investigator. Credit UMass Amherst Usage Restrictions None License Original 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.