Child's Recording Session (VIDEO) Acoustical Society of America This video is under embargo. Please login to access this video. To view this video please enable JavaScript, and consider upgrading to a web browser that supports HTML5 video Caption Here's another reason you might be exhausted after that preschool birthday party: Your brain had to work to figure out who actually asked for more ice cream. 'What we found with two-and-a-half-year-olds is that it's amazingly hard for adults to identify who's talking,' said Angela Cooper, a postdoctoral researcher at the University of Toronto. Cooper's co-authored research will be presented in the poster session at the Acoustical Society of America's 176th Meeting, Nov. 5-9. A sample of child's recording session Credit Cooper Usage Restrictions This clip may be used only with appropriate credit. 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.