The growth of a child until adolescence stage is defined as child development and this development is significant to the society due to the educational, cognitive and poignant development a child experiences in order to become a dynamic member of the society. Studying how a child grows is particularly important because it results in the formation of developmentally pertinent programs in school systems. The toy companies should also have the knowledge of the different stages of child development so that they can create toys suitable for specific age groups. 

Reading and writing are considered milestones in the development of a child. Even walking, talking and problem solving skills are considered milestones in the development of a child. So, the parents should closely observe these milestones to recognize the stage of child development and they have to support the activities the child carries out at different stages. Teaching social skills, creativity and patience at a young age and working on them regularly can result in appropriate development of these traits. If the child is unable to pick any of these traits, then that indicates a development delay which has to be addressed. 

If the parents discover such a delay at an earlier stage, with therapy and love it can be corrected to some extent. Proper training and education can cure these developmental delays and nowadays there is lot of opportunities available on the internet for children with special needs. You can take help of any of these programs and can assist your child to become a functional member of the social order.