Could you spot a psychopath by the way he or she talks?

Researchers found that psychopaths:
- Use the past tense more.
- Have more “dysfluencies” — the "uhs" and "ums."
- Show a lack of emotion.
- Speak in terms of cause-and-effect.
- Focus on basic needs, such as food, drink and money.

Read more here.

I’ve known two psychopaths. Possibly a third. None of them killers (at least not of physical bodies).