Discuss the life span perspective of human development

Prepare a 900- to 1,150-word paper in which you discuss the of . Be sure to include the following items in your description:
Summarize three theories related to and development and identify at least one influential theorist for each.
Identify aspects of the life span perspective.
Explain how heredity and the environment influence human development.
Use a minimum of two .
Format your paper consistent with .