Human development refers to the process of growth and change that occurs throughout a person's lifespan, encompassing physical, cognitive, emotional, and social development. It involves the acquisition of skills, knowledge, and abilities, as well as the formation of relationships and the development of a sense of identity and self-awareness. Human development is influenced by a variety of factors, including genetics, environment, culture, and personal experiences. It is a complex and ongoing process that continues from infancy through adulthood.