Child psychology is the scientific study of how and why human beings change over the course of their life. Originally concerned with infants and children, the field has expanded to include adolescence, adult development, aging, and the entire lifespan. Developmental psychologists aim to explain how thinking, feeling, and behaviors change throughout life. This field examines change across three major dimensions: physical development, cognitive development, and social emotional development. Within these three dimensions are a broad range of topics including motor skills, executive functions, moral understanding, language acquisition, social change, personality, emotional development, self-concept, and identity formation. Child psychology is the study of subconscious and conscious childhood development. Child psychologists observe how a child interacts with their parents, themselves, and the world, to understand their mental development. Child Psychology is an important branch of family health. It gives parents the resources to help their children advance through the stages of development and gives physicians a deeper look into the mental health and possible challenges a child might face in regards to learning or social differences, or developmental delays. Physical development in children is typically a predictable sequence of events. Your child holds their head up, rolls over, crawls, walks, and runs, in that order. Your Child Psychologist can aid your paediatrician in observing your child’s physical development, and if there are any abnormalities that could indicate developmental irregularities. Child Psychologists will observe your child’s progression toward the milestones of development to ensure that your child is physically developing normally. Major delays in physical development may reveal other underlying developmental issues that can then be addressed early on.