“It certainly makes sense that psychopathic traits are normally distributed across the general population,” he told me. “But the difference with those at the high end of the spectrum is that they can’t switch off [the fearlessness] in situations where it might be appropriate. A CEO might be non-risk-averse in certain areas of business, but, on the other hand, probably wouldn’t want to walk around a rough neighborhood at night. A psychopath isn’t able to make that distinction. With a psychopath, it’s all or nothing.”

