J.J. Newberry was a trained federal agent, skilled in the art of deception
detection. So when a witness to a shooting sat in front of him and tried to
tell him that when she heard gunshots she didn't look, she just ran -- he knew
she was lying.
How did Newberry reach this conclusion? The answer is by recognizing
telltale signs that a person isn't being honest, like inconsistencies in a
story, behavior that's different from a person's norm, or too much detail in an
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While using these signs to catch a liar takes extensive training and
practice, it's no longer only for authorities like Newberry. Now, the average
person can become adept at identifying dishonesty, and it's not as hard as you
might think. Experts tell WebMD the top 10 ways to let the truth be known.
Tip No. 1: Inconsistencies
"When you want to know if someone is lying, look for inconsistencies in
what they are saying," says Newberry, who was a federal agent for 30 years
and a police officer for five.
When the woman he was questioning said she ran and hid after hearing
gunshots -- without looking -- Newberry saw the inconsistency immediately.
"There was something that just didn't fit," says Newberry. "She
heard gunshots but she didn't look? I knew that was inconsistent with how a
person would respond to a situation like that."
So when she wasn't paying attention, he banged on the table. She looked
right at him.
"When a person hears a noise, it's a natural reaction to look toward
it," Newberry tells WebMD. "I knew she heard those gunshots, looked in
the direction from which they came, saw the shooter, and then ran."
Sure enough, he was right.
"Her story was just illogical," says Newberry. "And that's what
you should look for when you're talking to someone who isn't being truthful.
Are there inconsistencies that just don't fit?"
Tip No. 2: Ask the Unexpected
"About 4% of people are accomplished liars and they can do it well,"
says Newberry. "But because there are no Pinocchio responses to a lie, you
have to catch them in it."
Sir Walter Scott put it best: "Oh what a tangled web we weave, when
first we practice to deceive!" But how can you a catch a person in his own
web of lies?
"Watch them carefully," says Newberry. "And then when they don't
expect it, ask them one question that they are not prepared to answer to trip
Tip No. 3: Gauge Against a Baseline
"One of the most important indicators of dishonesty is changes in
behavior," says Maureen O'Sullivan, PhD, a professor of psychology at the
University of San Francisco. "You want to pay attention to someone who is
generally anxious, but now looks calm. Or, someone who is generally calm but
now looks anxious."
The trick, explains O'Sullivan, is to gauge their behavior against a
baseline. Is a person's behavior falling away from how they would normally act?
If it is, that could mean that something is up.