FBI Special Agent David Chaves spoke at an event called “The FBI on Wall Street” hosted by the New York Hedge Fund Round Table at the Penn Club of New York.

Since 2009, the FBI along with the SEC, and the US Attorney’s Office have been massively cracking down on insider trading in the hedge fund industry.

“I want to talk you a little about this,” Chaves said during the talk, pulling up a slide called “Lie Detection.”

“Because in this industry, some people lie. Let’s face it. Right? And not that I’m going to make you all lie-spotting experts tonight, ” he said.

He added that there are some traits you need to understand when you’re looking at people and trying to determine if they’re deceiving you.

1. Liars will repeat a question verbatim
2. Liars overemphasize their truthfulness: “To tell you the truth …” “Honestly …” “I swear”
3. Liars won’t use contractions in their denials: “Do not” instead of “Don’t”
4. Liars lips disappear: It shows great anxiety and stress — a lie can follow
5. Liars tend to adjust their tie or stroke their neck
6. Watch for cheek- or face-touching, exhaling with puffed cheeks, rubbing the forehead, or playing with a necklace
7. Liars WILL make direct eye contact
8. The deceivers’ native language is the lie!