Childhood and adulthood are two different – but equally important – times in our lives. Adults and children are often thought to be two different types of species. Biologically, the anatomy of a child will change continually, their organs and bodies rapidly develops over the course of time. Those biological changes are accompanied by vital changes to their mental and emotional state, with each person displaying different personalities, attitudes, and overall outlooks on life. Environmental factors such as wealth and social status, and ethnicity may affect how the child develops a self-concept and interacts with others. When children transition into adulthood, they are much different beings than they were years before. Adults also change, but not nearly as drastically as children do during that transition from childhood to adulthood. The main differences between childhood and adulthood are biological, psychological, and social.