Unnecessary Action -- Tapping (image) Cell Press Caption When a child with autism copies the actions of an adult, he or she is likely to omit anything "silly" about what they've just seen. In contrast, typically developing children will go out of their way to repeat each and every element of the behavior even as they may realize that parts of it don't make any sense. Credit Current Biology, Marsh et al. Usage Restrictions Credit Required 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.