Brain Structure Predicts Personality Traits (IMAGE) NIH/National Institute of Mental Health Caption The severity of abnormalities in insula (red structure near bottom of brain), gray matter volume (left) and brain activity (right) predicted the extent of aberrant personality traits in Williams syndrome patients -- as reflected in their scores (red dots) on personality rating scales (WSPP). Credit Karen Berman, M.D., NIMH Clinical Brain Disorders Branch 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.