Paranoia—the unwarranted sense that one is being threatened, endangered, disrespected—is probably the most common symptom fueling recurrent acts of violence. Jonathan and I have found that this is as true of violent juvenile delinquents as it is of violent adult criminals. This does not mean that most violent people are schizophrenic. As Jonathan and I teach our trainees at Georgetown and Bellevue, paranoia is characteristic of almost any neuropsychiatric disorder: schizophrenia, mania, depression, brain damage, seizures, alcoholism, senility, and more. It can emerge whenever something goes
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