Andrew Yockey, lead author (IMAGE) University of Cincinnati Caption Doctoral student Andrew Yockey is one a a team of reserachers at the UC School of Human Services who study substance abuse causation and prevention. Credit provided by Yockey 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.