Lifespan refers to the entire duration of an individual's life from birth to death, encompassing all stages of development.
Related terms
Developmental Psychology: This branch of psychology focuses on studying changes in human behavior and experiences throughout the lifespan.
Erikson's Stages of Psychosocial Development: These are eight stages that individuals go through across their lifespan, each characterized by a unique psychosocial challenge.
Aging: The process of growing older and experiencing physical, psychological, and social changes as a result.