Reduced social responsiveness Impaired social imitation 2023-03-23T14:48:16Z Reduced immediate imitation of others Reduced use of imitation of tasks or movements of others in play or learning. The ability to imitate others is common in children during early cognitive development (4-5 years old) and can be abnormal in children with developmental delay. HP:5200031 Decreased imitation of others HP:5200032