RT Book, Section A1 Vawter-Lee, Marissa A1 Lai, Wendy A1 Singleton, Lori M. A2 Hershey, Andrew D. SR Print(0) ID 1195235849 T1 Development in the NormalĀ Infant and Child T2 CURRENT Diagnosis & Treatment Pediatric Neurology YR 2023 FD 2023 PB McGraw Hill Education PP New York, NY SN 9781260457520 LK accesspediatrics.mhmedical.com/content.aspx?aid=1195235849 RD 2024/03/28 AB Achieving developmental milestones on time is a cornerstone of healthy, normal development. As physicians, we expect children to achieve certain milestones by specific times. These milestones include gross motor and fine motor skills, expressive and receptive language, vision, hearing, and cognitive and social skills. Although it may seem clear-cut by which age a child should be able to perform each skill, there is some flexibility. It is important to keep in mind whether a skill should be achieved by 50% of kids by a certain age or by 90% of kids at a certain age. In this chapter, we discuss skills in terms of when 75% to 90% of typical children of that age should have achieved the skill.1-8