David J. Lieberman is a psychotherapist who's trained members of the US military, FBI, and CIA.
He talked to CNBC about six signs that someone might be a sociopath.
They're often also more impulsive and dangerous than psychopaths, said David J. Lieberman, a psychotherapist who's trained members of the US military, the FBI, and the CIA.
He talked to CNBC about six warning signs that might help you spot a sociopath.
They show 'false humility'Displays of modesty and vulnerability are other tactics used by sociopaths to deceive people, according to Lieberman.