That test is quite easy to corrupt by telling the 20 people to make it easy for them of the people who get interviewed.
More importantly you test for a very specific skill that's likely trainable. The best people at the skill will be people trained by specific coaches in telling lies in that artificial setting. Those coaches might be payed for by lobbyists.
In real life telling whether people lie when things are at stake for them is a much more useful skill than telling whether someone is lying for whom nothing is at stake.
In most real world contexts where telling whether someone lies is important you analyse the persons motivations and the emotions that body language reveals. That's highly different from telling whether someone whom you give a random card from a deck of cards lies when he says: "This is the Queen of Hearts"
You could make there be something at stake by having everyone telling lies also be part of the group taking the test.
Unfortunately(?), this would mean that people would train at telling convincing lies as well training at detecting lies.
In the big survey, political views are divided into large categories so that statistics are possible. This article is an attempt to supply a text field so that we can get a little better view of the range of beliefs.
My political views aren't adequately expressed by "libertarian". I call myself a liberal-flavored libertarian, by which I mean that I want the government to hurt people less. The possibility that the government is giving too much to poor people is low on my list of concerns. I also believe that harm-causing processes should be shut down before support systems
So, what political beliefs do you have that don't match the usual meaning of your preferred label?