When it comes to a polygraph test, people find that they are asked all kinds of different problems over the course of their pre-test, the actual polygraph test uk, and the post-test review which comes after. Some questions are designed for a particular purpose, and you’re likely to hear them on more than one occasion. We’re taking a look at some of the most common lie detector test questions that you could hear.

Have you ever told a lie?

This is a question which is asked on a fairly frequent basis when it comes to a polygraph test. This is because the question ‘have you ever told a lie?’ is a common control question. To understand what your vital signs will look like when you’re lying, they ask a question of this kind. This is because most people will in fact lie and say that they’ve never told a lie, to come across as cooperative and truthful. However, this is nearly always a lie in itself, and so the examiner will have a clear understanding of what the vitals look like with a small lie.

You were in born in _____ , right?

This type of question may seem relatively straightforward, but it is in fact not. The examiners will already know about the personal details of the subject, so the year of birth that they offer is going to be wrong. This is a deliberate move and is designed to confuse. The premise being that the more confused someone gets, the more likely that they are to make a mistake and confess to something they’re trying to hide.

What is your connection to _____?

These kinds of questions are ones who can not be answered with just a yes or no answer. The problem with asking closed questions is that you’ll find that people will just answer with one word. This makes it harder to try and get any real information, so examiners often ask more open ended questions during polygraph tests. This means that while they are answering the question, they may feel relaxed enough to go into some detail about their connection to a person or event, which then gives examiners more to work with.

Overall, these are just a few of the different questions which you might encounter while taking a polygraph test. A polygraph test is a potent tool for making sure that someone is telling the truth, but the effectiveness of the trial overall is very much dependant upon the type of questions which you ask. If you focus only on issues which are closed off and require one-word answers, then you may find that you limit the information you can get, and also make it harder to find out if someone is lying. Open ended questions are therefore a better choice from the perspective of gathering information because they’re more likely to generate a significant amount of information and provide a better insight into whether someone is telling the truth or not.