Social-Emotional Development refers to the process by which children develop their ability to interact with others and understand and manage their own emotions. Social-Emotional Development lays the foundation for children to develop healthy relationships with others and be able to function well socially and emotionally. There are several key milestones in Social Emotional Development, such as developing a sense of self-awareness, being able to regulate emotions, and developing empathy for others. These milestones are important for children to reach so that they can function well socially and emotionally.