Adult developmental milestones. Encourage play that involves building and creativity. Avoid programming with violent content. Feed themselves finger foods Hold a cup with two hands and drink with assistance Hold out arms and legs while being dressed Mimic simple actions Show anxiety when separated from primary caregiver. True or false? Act Early. February 6, Content source: Children learn these skills, called developmental milestonesduring predictable time periods. Development tests are not infallible. Sometimes tests are used for purposes other than those for which they were designed. Facebook Twitter Email Syndicate. We also will share with you some warning signs or "red flags" to watch for that may mean your child is not meeting developmental milestones.