Chapter six focuses on lifespans and the developmental process of life, the many stages, and the different theories that exist concerning lifespan development. Merriam-Webster Dictionary defines lifespan as the duration of existence of an individual. While Ellery Pullman, the author of chapter six in Introduction to Christian Education: Foundations for The Twenty-First Century, describes the word lifespan as the study of change in behavior over the whole life span from birth until death. Additionally, it is noted that lifespan takes into consideration the multitude of changes that occur over time because of many factors interacting together. Former events affect future development that also occurs within various context and cultures. Chapter
