Scientifically proven ways to catch a true liar

I see, media cannot do what they have to do.
If you ask them (Katainen, Stubb etc.) the policy about relations with Nato were going, and what more about new versions of the policy on relations with NATO , perharpas `they try to read you to see if you are buy­ing their sto­ry´, or gen­er­ally want to say as lit­tle as pos­si­ble un­der ques­tioning.
May they’re likely to press their lips when asked a sen­si­tive ques­tion.
Peo­ple can learn to per­form bet­ter at de­tect­ing de­cep­tion.
Here come the more re­li­a­ble signs of de­ceit.
According to psy­chol­o­gist R. Ed­ward Geisel­man, if dis­hon­est peo­ple try to mask these nor­mal re­ac­tions to ly­ing, they would be even more ob­vi­ous.
- Have peo­ple tell their sto­ry back­wards, start­ing at the end and sys­tem­at­ic­ally work­ing their way back.
In­struct them to be as com­plete and de­tailed as they can. This tech­nique, part of a `cog­ni­tive in­ter­view´.
In­creases the cog­ni­tive load to push them over the edge. A de­cep­tive per­son, even a pro­fes­sional liar is `un­der a heavy cog­ni­tive load´ as he tries to stick to his sto­ry while mon­i­toring your re­ac­tion.

- Ask open-end­ed ques­tions to get them to pro­vide as many de­tails and as much com­plete in­forma­t­ion as pos­si­ble: `Can you tell me more about...?´ `Tell me ex­act­ly´.
First ask gen­er­al ques­tions, and only then get more spe­cif­ic.
- Don’t in­ter­rupt, let them talk and use si­lent pauses to en­cour­age them to talk.

In the other hand truth­ful peo­ple, if chal­lenged about de­tails, will of­ten de­ny that they are ly­ing and ex­plain even more, while de­cep­tive peo­ple gen­er­ally will not pro­vide more spe­cif­ics.
And when asked a hard ques­tion, truth­ful peo­ple will of­ten look away be­cause the ques­tion re­quires con­centra­t­ion, while dis­hon­est peo­ple will look away only brief­ly, if at all, un­less it is a ques­tion that should re­quire in­tense con­centra­t­ion.

Univers­ity of Cal­i­for­nia Los An­ge­les psy­chol­o­gist R. Ed­ward Geisel­man, who has taught in­ves­ti­ga­tive in­ter­view­ing tech­niques to law en­forcers for years, and col­leagues re­port the find­ings in the April is­sue of the Amer­i­can Jour­nal of Fo­ren­sic Psy­chi­a­try.