A Signal of Optimism in the Brain (image) University of Illinois at Urbana-Champaign Share Print E-Mail Caption Glass half full or half empty? What you see may depend in part on the size of your orbitofrontal cortex. Optimistic people also tend to be less anxious, research finds. Credit Graphic by Julie McMahon Usage Restrictions Credit please: Graphic by Julie McMahon Share Print E-Mail 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.