Size-Weight Illusion Research (IMAGE) University of Exeter Caption Researchers tested how the illusion affected non-amputees who used a prosthetic hand simulator to lift objects. Credit Johnny Parr Usage Restrictions This image may only be used with reports of this research 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.