Cognitive Flexibility Task (IMAGE) Drexel University Caption Study participants were asked to respond to the larger (or global) shape if the image was green and to the smaller (or local) shape if it was white, while researchers measured their brain activity with fMRI. Credit Drexel 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.