Middle and late childhood spans ages 7 to 12 years. During this period, children experience significant physical, cognitive, emotional, social, and moral development. Physically, they continue growing and developing motor skills. Cognitively, they progress from concrete to more abstract thought. Emotionally, they develop more complex self-concepts and understanding of emotions. Socially, relationships with parents change and same-sex peer groups become more important. Moral reasoning also advances during these years.