The term 'Stages of Development' refers to the different stages of growth and development that a person goes through from birth to adulthood. The term 'PHASES' is often used to refer to these stages, which can be divided into physical, cognitive, social, and emotional development. Physical development includes changes in physical size, strength, and coordination. Cognitive development involves changes in thinking, problem solving, and language. Social development includes changes in relationships with others and the ability to interact with them. Emotional development involves changes in feelings, emotions, and self-awareness. All of these stages of development are important for a person's overall health and wellbeing.