Debate the emerging adulthood theory versus either traditional adulthood roles or the defining decade theory. This should include a discussion of Jeffrey Jensen Arnett's theory of emerging adulthood, his three new milestones of adulthood, and his characteristics of an emerging adult. Contrast it with either the "Defining Decade" ideas in the Meg Jay video, or the traditional milestones of adulthood. Provide details and examples to demonstrate understanding!