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posted by Fnord666 on Saturday May 14 2022, @04:37AM   Printer-friendly
from the pants-on-fire dept.

A new method of lie detection shows that lie tellers who are made to multi-task while being interviewed are easier to spot:

It is well documented that lying during interviews takes up more cognitive energy than telling the truth. A new study by the University of Portsmouth found that investigators who used this finding to their advantage by asking a suspect to carry out an additional, secondary, task while being questioned were more likely to expose lie tellers. The extra brain power needed to concentrate on a secondary task (other than lying) was particularly challenging for lie tellers.

[...] "Our research has shown that truths and lies can sound equally plausible as long as lie tellers are given a good opportunity to think what to say. When the opportunity to think becomes less, truths often sound more plausible than lies. Lies sounded less plausible than truths in our experiment, particularly when the interviewees also had to carry out a secondary task and were told that this task was important."

[...] Professor Vrij said: "The pattern of results suggests that the introduction of secondary tasks in an interview could facilitate lie detection but such tasks need to be introduced carefully. It seems that a secondary task will only be effective if lie tellers do not neglect it. This can be achieved by either telling interviewees that the secondary task is important, as demonstrated in this experiment, or by introducing a secondary task that cannot be neglected (such as gripping an object, holding an object into the air, or driving a car simulator). Secondary tasks that do not fulfil these criteria are unlikely to facilitate lie detection."

So if you think your significant other is hiding something from you, grill them when they're driving a car.

Journal Reference:
Aldert Vrij et al., The Effects of a Secondary Task on True and False Opinion Statements [open], Int J Psychol Behav Anal, 8, 2022
DOI: 10.15344/2455-3867/2022/185


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  • (Score: 1, Funny) by Anonymous Coward on Saturday May 14 2022, @07:52AM (9 children)

    by Anonymous Coward on Saturday May 14 2022, @07:52AM (#1244933)

    Someone's been watching old 1980s VHS tapes, where the Hot Woman Police Officer with the Farrah-hair unzips her tight jumpsuit and gets the truth out of the suspect.

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  • (Score: 1, Insightful) by Anonymous Coward on Saturday May 14 2022, @08:41AM

    by Anonymous Coward on Saturday May 14 2022, @08:41AM (#1244936)

    Huh, I thought the hero of the Police Academy series was Laverne Hooks with her pipsqueak voice.

    We must have been watching different 'movies'.

  • (Score: 0) by Anonymous Coward on Saturday May 14 2022, @08:43AM (6 children)

    by Anonymous Coward on Saturday May 14 2022, @08:43AM (#1244937)

    Was it the Cannonball Run where the two attractive young ladies are driving the Lamborghini and use that technique when stopped for speeding, until they are finally stopped by a female police officer of the Women's Lib variety?

    • (Score: 0) by Anonymous Coward on Saturday May 14 2022, @09:48AM (3 children)

      by Anonymous Coward on Saturday May 14 2022, @09:48AM (#1244942)

      But you forget the scene in "Little Miss Sunshine", where the motorcycle cop pulls them over, only to find uncle's stash of gay pron mags, which he has to confiscate for further investigation. And not to forget the really creapy biker dude at the end. Who even puts on these child sex shows, anyway? Arizonians? Arkansasians? Republicanians>

      • (Score: 1) by khallow on Saturday May 14 2022, @11:51AM (1 child)

        by khallow (3766) Subscriber Badge on Saturday May 14 2022, @11:51AM (#1244953) Journal
        Given that it was a movie and all, Hollywoodians. But maybe they come from Arkansas?
        • (Score: 0) by Anonymous Coward on Sunday May 15 2022, @02:57AM

          by Anonymous Coward on Sunday May 15 2022, @02:57AM (#1245049)

          Given that it was a movie and all, Hollywoodians.

          The ones responsible for sexualizing children in "Cuties" on Netflix?

      • (Score: 2) by driverless on Sunday May 15 2022, @09:14AM

        by driverless (4770) on Sunday May 15 2022, @09:14AM (#1245072)

        I'm thinking of the scene where the dude says "these aren't the droids you're looking for" to the cops and waves his fingers and they let him go, that one works every time.

    • (Score: 0) by Anonymous Coward on Saturday May 14 2022, @06:56PM (1 child)

      by Anonymous Coward on Saturday May 14 2022, @06:56PM (#1244993)

      Ahhh, Adrian Barbeau. And I was of an optimal age when that came out such that those scenes were burned into my brain! Just search "Adrian Barbeau cannonball run" and put yourself into a post-adolescent male frame of mind and you'll see why!

      • (Score: 3, Interesting) by Reziac on Sunday May 15 2022, @04:39AM

        by Reziac (2489) on Sunday May 15 2022, @04:39AM (#1245053) Homepage

        Ah, I've worked with her (me just an extra, but it was a small set). Nice lady, and a little slip of a thing, but looks just as good in person.

        --
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  • (Score: 2) by HiThere on Saturday May 14 2022, @01:18PM

    by HiThere (866) Subscriber Badge on Saturday May 14 2022, @01:18PM (#1244967) Journal

    Never watched it, but it does sound like it could be the same principle.

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