Question 1

How accurate are polygraph tests in the UK?

Accepted Answer

Run properly, a single issue polygraph test is accurate somewhere between 90 and 98 percent. Where a test sits in that range depends on things you can check before you book: who trained the examiner, what equipment they use, where the test takes place and whether validated question techniques are followed.

Question 2

Can anxiety or nervousness cause me to fail the test?

Accepted Answer

No. Nerves show up as a general pattern across the whole examination, not as the specific responses an examiner scores against. Almost everyone tested is anxious, truthful people included, and the scoring accounts for that.

Question 3

How much does a polygraph test cost in Cardiff?

Accepted Answer

A single issue test with Cardiff Polygraph Services is £399, booked and paid online. The price includes the pre-test interview, the examination at the Cardiff Gate office and the full written report with recorded charts. Some national firms charge £495 for the same test in Cardiff.

Question 4

How long does a polygraph test take?

Accepted Answer

Around two hours in total. Much of that is the pre-test interview where the question is agreed. The recorded test takes roughly 90 minutes, and the preliminary result is discussed before you leave. The full written report follows within 24 hours.

Question 5

Can I see the questions before taking the test?

Accepted Answer

Yes, every question is agreed with you word for word during the pre-test interview before anything is recorded. You will know exactly what you will be asked.

Question 6

Are polygraph test results admissible in UK courts?

Accepted Answer

Not as primary evidence. UK courts do not generally accept polygraph results, though the probation service uses them in offender management. Private tests are mainly used to resolve relationship disputes, family disagreements and workplace investigations.

Lie Detector Test Cardiff & South Wales