Final answer:
Assuming a Lifespan perspective means understanding that human development is influenced by both nature and nurture, encompassing genetic and environmental factors throughout various life stages.
Step-by-step explanation:
When taking a Lifespan perspective to examine human development, we would assume that development is influenced by both nature and nurture. This viewpoint is largely studied by developmental psychologists who recognize that development is a complex interaction of both genetic predispositions and environmental factors. Development is not a linear progression but is seen as a lifelong process that involves changes and growth in physical, cognitive, and psychosocial domains across various stages of life, from prenatal development to death. Therefore, while genetics play a key role, our interactions with our environment and social context also significantly shape our developmental outcomes. This understanding aligns with theories such as Erikson's psychosocial development and Piaget's cognitive development, which highlight the interplay between biological factors and experiential learning throughout different stages of life.