Life Span Development refers to the study of how individuals grow and change throughout their lives, from infancy to old age. This field examines various aspects of development, including physical, cognitive, emotional, and social changes. Researchers explore how these changes are influenced by factors such as genetics, environment, and culture. The concept emphasizes that development is a lifelong process, with each stage presenting unique challenges and opportunities. Key theories, such as those proposed by Erik Erikson and Jean Piaget, help to explain the different phases of development and the tasks individuals face at each stage, contributing to a comprehensive understanding of human growth.