Three Ways to Spot a Liar

Advisors operate in a post-truth era. The world is cluttered with deception in investment services, media, business, literature, academia and politics. Advisors need to be equipped to identify liars in their interactions in order to make better decisions and not be deceived. Here are three ways advisors can protect themselves from false claims, detect less-than-honest responses and present themselves in a manner that conveys truthfulness.

A recent Harvard Business School Working Knowledge article by Carmen Nobel, How to Spot a Liar, described the recently published research detailed in the paper ,Evidence for the Pinocchio Effect: Linguistic Differences Between Lies, Deception by Omissions, and Truths, by HBS professor Deepak Malhotra and associates Lyn M. Van Swol and Michael T. Braun. Their research sheds light on how linguistic clues reveal dishonesty during business negotiations, including flat-out lies and deliberate omissions of key information.

Indeed, this research provides clues to determine if someone is lying to you.

"Most people admit to having lied in negotiations, and everyone believes they've been lied to in these contexts," according to Malhotra. "We may be able to improve the situation if we can equip people to detect and deter the unethical behavior of others."

The researchers recruited 104 participants to participate in the “ultimatum game” to determine truth-tellers, liars and deceivers by omission. The game of ultimatum is a tool used by experimental economists. The researchers modified the rules for the purposes of their deception research. The game is traditionally played with two people, an allocator and a receiver. The allocator begins the game with an initial endowment sum of $30 or $5 to share with the receiver. The allocator can decide to play honestly and share the full amount with the receiver, or play dishonestly and share a lesser amount of the initial sum. The receiver does not know in advance how much money with which the allocator started.

The researchers’ version of the game also allowed the receiver to reject the allocator’s offer and receive a default amount of either $7.50 or $1.25 in lieu of taking any risk at all. Prior to making a final decision, the receiver was given two minutes to interrogate the allocator about the pending offer to determine whether the allocator was offering an honest or dishonest deal. These interrogations were videotaped, and the researchers analyzed the linguistic content of the interrogations. The results showed that 70% played the game honestly and the remaining 30% played deceptively. The deceptive 30% were categorized as either flat-out liars or deceivers by omission.