Answer:
They explored the darker sides of the human soul.
Step-by-step explanation:
One of the differences of Dark Romantics and the Transcendentalists is that the Dark Romantics reintroduced the dark side of Puritan beliefs: the idea of Original Sin and the human potential for evil. They countered the optimism of the Transcendentalists and explored the human potential for evil, including the psychological effects of guilt, sin, and madness presenting individuals as prone to sin and self-destruction.