When Your Child Is a Psychopath - The Atlantic The condition has long been considered untreatable. Experts can spot it in a child as young as 3 or 4. But a new clinical approach offers hope. At 11, Samantha is just over 5 feet tall and has wavy black hair and a steady gaze. She flashes a smile when I ask about her favorite subject (history), and grimaces when I ask about her least favorite (math). She seems poised and cheerful, a normal preteen. But when we steer into uncomfortable territory—the events that led her to this juvenile-treatment facility nearly 2,000 miles from her family—Samantha hesitates and looks down at her hands. “I wanted the whole world to myself,” she says. “So I made a whole entire book about how to hurt people.” Starting at age 6, Samantha began drawing pictures of murder weapons: a knife, a bow and arrow, chemicals for poisoning, a plastic bag for suffocating. She tells me that she pretended to kill her stuffed animals. “You were practicing on your stuffed animals?,” I ask her. She nods.