Passage: According to Professor Peter Jones of Cambridge university development of the brain continues long past legal definitions of adulthood so "to have a definition of when you move from childhood to adulthood looks increasingly absurd. It's a much more nuanced transition that takes place over three decades." Children go through stages of social development. Children learn initially through play and later in most societies through formal schooling. As a child is growing they are learning how to do some tasks in chronological order. They learn how to prioritize their goals and actions. Their behavior is transcending as they learn new perspectives from other people. They learn how to represent certain things symbolically and learn new behavior.

Question: What type of people move through different social development periods?
Children