Practice makes the perfect liar

By Tia Ghose, LiveScience 

The more you practice a lie, the better you get at it, say the results of a new study.

Published Nov. 12 in the journal Frontiers in Cognitive Science, the study found that, after 20 minutes of practicing their cover story, liars could respond just as quickly and easily to lies as to the truth. Moreover, they were no more likely to slip-up on falsehoods than on the truth.

"After a short time of training, people can be very efficient at lying," said Xioaqing Hu, a study co-author and psychology doctoral candidate at Northwestern University. "The difference between lying and being honest has been eliminated after the training."

Though people lie for myriad reasons, it's no easy task. Lying takes a lot of brainpower because it requires holding contradictory information in mind (the truth and the lie), while inhibiting the urge to tell the truth. Children are terrible liars and only improve as they mature. And several studies have found that people take longer to tell a lie than to tell the truth.

"Lying is a difficult, because honesty is the default communication mode," Hu told LiveScience.

But past studies mostly tested people's ability to offer a deception with no practice. In real life, criminals usually practice and perfect their alibis before facing a police interrogation. [ 10 Interesting Facts About the Brain ]

Hu and his colleague wanted to see how lying changed with practice. They asked 16 people to essentially play at espionage by remembering three facts for a false identity: their new name, a new date of birth and a new hometown.

Researchers then asked volunteers to answer a question ("Is this true of you?") for different facts about their true self, and to press a "yes" or "no" button in response, while the researchers measured response time and accuracy.

The liars were then asked to practice lying by pressing "yes" whenever a fact from their false identity appeared and "no" when true details were presented. (A control group of 16 people performed the same trial, but answered yes to the truth.)

After 270 trials, or about 20 minutes of training, liars were indistinguishable from truth-tellers on accuracy and response time.

"We think that, psychologically, the people basically learned that this is not me and the fake identity is me," Hu said.

The team is currently studying whether other measures of lying, such as polygraph machines or EEG brain wave measurements, can reveal practiced deception, or whether lies are completely undetectable using current methods, he said.

The findings have implications not just for would-be criminals, but also for lie-detection research, which usually attempts to spot deception immediately after a person is asked to lie.

"But in the real world, after a crime, there is usually a delay between the crime and the interrogation," giving the criminal a chance to practice their falsehood, he said.

Hu's team is currently studying whether people can improve their lies when asked to provide a false memory of events — for instance, when creating an alibi after a burglary.

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Discuss this post

My former step-mother was able to lie about being divorced from her first husband long enough that she was able to keep her bigamy a secret for nearly 25 years.

  • 1 vote
Reply#1 - Tue Nov 27, 2012 4:51 PM EST

No wonder Romney seemed tired all of the time. He must have stayed awake all night many times during the campaign to tell as many conflicting stories as he did.

  • 3 votes
Reply#2 - Tue Nov 27, 2012 5:22 PM EST

Wasn't he the case study?

  • 3 votes
#2.1 - Tue Nov 27, 2012 6:04 PM EST
Reply

So that's why obama and crew are keeping quiet about Benghazi! They are still practicing. That's scary, they're already really good at it.

  • 2 votes
Reply#3 - Tue Nov 27, 2012 5:36 PM EST

It's only a lie if you know he truth. Do you?

  • 3 votes
#3.1 - Tue Nov 27, 2012 6:04 PM EST

Confussed, Obama's silence speaks volumes so I'll say for him. His failure and cover up of Benghazi is cowardly and despicable. When is he going to address his part in it from the beginning.

    #3.2 - Mon Dec 10, 2012 1:21 PM EST
    Reply

    The obvious, and most recent, example of this would be Mitt Romney and/or Paul Ryan. But in reality, they are just victims of a deep seeded desire to dominate fellow human beings, and lying is just a tool for them. Therefor they see no moral objection because for them the end justifies the means. The same way that their bullying masks their fear, lying hides the truth.

    • 3 votes
    Reply#4 - Tue Nov 27, 2012 5:50 PM EST

    Many large high tech companies actually teach their customer support representatives ho to 'lie with authority' in order to control irate customers. This is nothing new, as politicians, lawyers, judges, police officers, military personnel and certainly every Muslim in the world rely on lies to maintain their positions.

    • 1 vote
    Reply#5 - Tue Nov 27, 2012 5:58 PM EST

    Our society rewards liars, to the point women think its normal, and businesses promote those who are the worst offenders. Its sad that lies have become so normal in our society. Its no wonder our country is failing, its full of fake selfish, manipulative people, who get rewarded for their douchbaggery.

    • 2 votes
    Reply#6 - Tue Nov 27, 2012 6:09 PM EST

    once: "Our society rewards liars, to the point women think its normal,"

    Are you saying women think it's normal for men to lie to them? You may have a point there (even if it is at the top of your head)... ;^)

    • 1 vote
    #6.1 - Wed Nov 28, 2012 5:01 PM EST
    Reply

    Mark Twain wrote an essay about perfecting lying skills and argued that this was an important skill that we all need. He was right; he was talking about the lies we tell to protect the feelings of others.

    If you've seen the movie "Liar, liar" you know how bad and comical compulsive truth-telling can be.

    Lies that are made for selfish interest at the expense of others are a different story.

    • 1 vote
    Reply#7 - Tue Nov 27, 2012 6:27 PM EST

    Geez, all this time I thought it was called "Acting"

      Reply#8 - Tue Nov 27, 2012 6:51 PM EST

      A Polygraph is a joke.

      Remain calm, stare at one spot in the room, and lie.

      • 3 votes
      Reply#9 - Tue Nov 27, 2012 7:17 PM EST

      While its possible to convincingly tell a lie (Lance Armstrong is a good example), the fact remains that a lie can still be recognized because somewhere it introduces a contradiction that cannot be resolved. My ex-wife was a decent liar, but it was easy for me to catch her in them.

        Reply#10 - Tue Nov 27, 2012 7:41 PM EST

        So how come Faux News still sucks at it?

        • 1 vote
        Reply#11 - Tue Nov 27, 2012 7:49 PM EST

        There are some people I swear are born liars.Who will lie about the littlest things, even when nothing is gained from the lie. On the other hand, studies show that most people state honesty is highly rated as as desirable trait but practically nobody practices it.So why do we get so disappointed so often when we know people aren't practicing it, even ourselves?It seems wishful thinking, yet we still must expect honesty and integrity.It is the basis of our society and laws.As corrupt and immoral as we are becoming.

        Various studies have found people lie two-three times within ten minutes or as little as just once a day. But practically everyone is deceptive in their conversations. How silly of us humans. We want it honesty from others but really so often don't want to hear the truth on the other hand in certain situations. Sometimes about ourselves because it would be painful. Like the question wives ask their husbands,"Does this dress make me look fat?" Pity the husband who answers yes!

        • 1 vote
        Reply#12 - Tue Nov 27, 2012 9:27 PM EST

        Susan Rice and Obama are perfect examples of this.

          Reply#13 - Tue Dec 4, 2012 12:36 AM EST

          Aww! Are we still whining because Mitt lost? Get over it!

            #13.1 - Tue Dec 4, 2012 10:14 PM EST
            Reply
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