Jan 01, · Lifespan developmental psychology is an overarching framework, which considers the study of individual development (ontogenesis) from conception into old age. . Developmental Psychology | Simply Psychology.
According to psychosocial theory, we experience eight stages of development over our lifespan, from infancy through late adulthood. At each stage there is a conflict, or task, that we need to resolve. Successful completion of each developmental task results in a .