The term "moral insanity" was originally used by alienists to describe a condition characterized by a lack of moral judgment, labeling individuals who displayed such behavior as moral imbeciles. This definition highlighted the psychological disconnect between these individuals and societal norms. Over time, the terminology evolved, and the term "psychopath" became more widely accepted to identify individuals exhibiting similar traits.
In Erik Larson's "The Devil in the White City," the exploration of this condition emphasizes the complexities of human behavior and morality. The shift from moral insanity to psychopathy reflects a deeper understanding of mental health issues, illustrating how societal perceptions have changed regarding those struggling with moral and ethical decision-making.