At the age of 6, a child would most likely experience the school system which would include preschool and kindergarten. There are many physical, cognitive, and social changes that are happening in middle childhood development. This article will examine how these changes affect the child's ability to function in society. This analysis will focus on the normal course of development in early childhood as applied to theorist Erik Erikson's psychosocial stages and then provide examples of what can happen if developments are not continued. In middle childhood (6-12 years), the child will experience the Industry vs. Inferiority. This is the fourth stage of Erikson's psychosocial stage. With the previous three stages, the child has already learned to decide what is right and what is wrong, deciding when to say no, and has learned to trust others through attachment (Boyd, Johnson, & Bee, 2009). The child will be sent to school for the first time in kindergarten; where they will learn to interact with new children their age. Changes and Physical Development Boyd, Johnson, and Bee (2009) state that, “between the ages of 6 and 12, children grow 5 to 8 centimeters and add approximately 2.75 kilograms each year. “ The child will be able to learn to use his large muscles to learn new skills such as running long distances in athletics and riding a bicycle without the use of training wheels (Boyd, Johnson, & Bee, 2009). There is an improvement in hand-eye coordination that allows the child to catch or kick a ball in field sports (Boyd, Johnson, & Bee, 2009), children are prone to injuries resulting in falls that “the child begins to be interested in” tools, instruments and… the medium of paper… the effects of violence between parents on children. Journal of Child & Family Studies, 19 (3), 287-297. 1992).Erikson's Childhood Injuries and Psychosocial Stages, Social Behavior and Personality, 20(2), 95-100.Huffman, K., Younger, A., & Vanston, C. (2010). .). Mississauga: John Wiley & Sons Canada. Morrongiello, B. A., Corbett, M., McCourt, M., & Johnston, N. (2006). Understanding the Risk of Unintentional Injury in Young Children I. The nature and extent of caregiver supervision of children at home. Journal of Pediatric Psychology, 31 (6), 529-539.Studer, J. R. (2006). Erik Erikson's psychosocial phases applied to supervision. Guidance and counseling, 168-173. Wyeth, P. (2008). How young children learn to code with sensors, actions, and logic blocks. Journal of Learning Sciences , 17 (4), 517-550.