Chimpanzees (image) American Association for the Advancement of Science Share Print E-Mail Caption Chimpanzees participated in a comprehensive battery of tasks comparing their physical and social cognitive abilities to those of 2-year-old human children. Credit Image courtesy of MPI EVAN/JGI-USA. Usage Restrictions None 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.