CIT Testing in Leeds

CIT Test Leeds

Concealed Information Testing by home visit or at a private venue across Leeds and West Yorkshire.

Book a CIT Test What Is a CIT Test?
WhereYour home or a private room arranged in Leeds. There is no clinic to attend.
What it testsWhether one specific detail is recognised, read from the P300 brain response.
What you needA detail the person has not been told, and their agreement to take part.
TimeAbout ninety minutes on the day, after the word lists have been agreed with you.

On this page

  1. CIT Testing in Leeds
  2. Areas We Cover
  3. Where the Test Takes Place
  4. What You Need Before Booking
  5. A Local Example of a Word List
  6. What the Test Can and Cannot Tell You
  7. The Legal Position in Leeds
  8. Booking a CIT Test in Leeds
  9. Questions and answers

CIT Testing in Leeds

How the service runs locally.

We carry out Concealed Information Tests in Leeds and across West Yorkshire. The route from our base in Cheshire is over the Pennines on the M62, and the examiner comes to you: a home address, or a private room arranged in or near the city.

The CIT measures whether a person's brain picks out one true detail from a list of look-alike alternatives. It is recorded with an EEG cap and involves no accusing questions. This page is about the service in Leeds. The CIT testing guide covers how the test works.

Areas We Cover

Coverage includes all five West Yorkshire districts: Leeds, Bradford, Wakefield, Kirklees and Calderdale, and extends north to Harrogate and York.

  • Leeds city centre
  • Headingley
  • Chapel Allerton
  • Roundhay
  • Horsforth
  • Pudsey
  • Morley
  • Garforth
  • Otley
  • Wetherby
  • Bradford
  • Wakefield
  • Huddersfield
  • Halifax

We also travel to Harrogate, York, Dewsbury and Castleford. If your address is not listed, ask: the examiner comes to you, so the list is a guide and not a boundary.

Where the Test Takes Place

At home, or in a private room arranged near you.

A quiet room, a table, a chair, a socket and about ninety minutes are all that is needed for a home visit. Terraced and back-to-back houses, common in parts of Leeds, are perfectly workable as long as one room can be kept free of interruptions.

Student and shared houses around Headingley and Hyde Park are the main exception. With several people sharing, an uninterrupted recording is difficult, so we would normally arrange a private meeting room instead. The same applies wherever the person who booked the test lives at the same address as the person being tested.

What You Need Before Booking

The requirement is the same everywhere, and it is the one most cases fail.

A CIT needs at least one specific detail that the person would know only if they were involved, and that they have not been told, shown or asked about. A name, a place, an object or an amount can all work. A general suspicion cannot, because there is nothing in it to recognise. Two or three separate details make a stronger test than one.

The person to be tested must agree and gives written consent on the day. The full requirements, with a checklist, are on the who qualifies for a CIT test page. If no detail is known, read about the searching CIT and its limits before going further.

A Local Example of a Word List

Illustrative only. Real lists are written for each case.

Suppose the detail being tested is a town, and the true answer is Otley. The person would see that item mixed in with five alternatives, Ilkley, Selby, Skipton, Ripon and Thirsk, and would be asked to press a different key whenever Malton appeared. Each item is shown around thirty times in shuffled order.

Here the alternatives are Yorkshire market towns of a similar size, none of them in the person's daily life. If the person had relatives in Skipton, Skipton would come off the list.

The step-by-step account of what happens next, from recording to result, is on the how CIT testing works page.

What the Test Can and Cannot Tell You

The same limits apply in Leeds as anywhere else.

A CIT can show that a detail is recognised, or that there is no sign of recognition in a recording that passed its quality check. It cannot test a bare accusation, it cannot tell innocent knowledge from guilty knowledge, and it does not prove what a person did. People can also be taught techniques that weaken the test; research published in 2004 showed this for the protocol we use.

Published laboratory studies of P300-based CITs commonly report detection of 80 to 95 per cent of people who hold the tested information. Those are laboratory figures and are not results from our own testing, and field validation is limited. If you are weighing this against a conventional lie detector, the CIT test vs polygraph comparison sets out the differences, and relationship cases are covered on the page about CIT testing for a suspected cheating partner.

Booking a CIT Test in Leeds

What happens after you get in touch.

You can book online or ask a question first. We will ask what happened, what the person to be tested has and has not been told, and who else knows. If a sound test can be built, we draft the word lists with you and then agree a date and place in Leeds. If it cannot, we will say so before any appointment is made.

Book a CIT Test

More on CIT Testing

Each guide covers one part of the subject in depth.

CIT Testing UKThe main guide: what a Concealed Information Test is, what it can and cannot show, and how to book. How CIT Testing WorksThe method in full: item lists, the EEG recording, the scoring and the checks that guard against a bad reading. Who Qualifies for a CIT TestThe case requirements, the consent requirement and a checklist to work through before you book. CIT Test vs PolygraphTwo different tests compared: what each measures, what each needs, and where each one goes wrong. CIT Test for a Suspected Cheating PartnerWhat a CIT can and cannot show in a relationship trust case, and why a withheld detail is essential. The Searching CIT TestFor cases where the true answer is unknown: how the searching method works and why it is reported more cautiously.

CIT Testing by Area

Local arrangements, coverage and the legal position in each area.

CIT Test London CIT Test Manchester CIT Test Birmingham CIT Test Liverpool CIT Test Bristol CIT Test Cardiff CIT Test Scotland CIT Test Sheffield CIT Test Newcastle CIT Test Nottingham CIT Test Brighton CIT Test Cheshire

Questions and Answers

Questions about arranging a CIT test in Leeds.

Do you cover Bradford, Wakefield and Huddersfield from Leeds?

Yes. All of West Yorkshire is covered, including Bradford, Wakefield, Huddersfield and Halifax, and we also travel to Harrogate and York.

Can the test be done in a shared or student house?

A private meeting room is usually the better choice. The recording needs around ninety minutes with no interruptions, which is hard to guarantee in a shared house.

Where is your Leeds office?

We do not have one. We are based in Cheshire and travel to Leeds for appointments, testing at home addresses or in private rooms that we arrange.

What is a CIT test?

A Concealed Information Test measures whether a person's brain recognises a specific detail that they would know only if they were involved in an event. It uses an EEG cap and an on-screen task, and it does not ask accusing questions.

How long does an appointment in Leeds take?

Allow about ninety minutes. That covers consent, fitting the cap, checking the signal, and two or three recording blocks of around ten minutes each with rests between.

Does the person being tested have to agree?

Yes. Testing is voluntary and needs their written consent on the day. They can stop at any point.

Sources

The published research and legislation this page draws on.

  1. Meijer, E. H., klein Selle, N., Elber, L., and Ben-Shakhar, G. (2014). Memory detection with the Concealed Information Test: a meta-analysis of skin conductance, respiration, heart rate, and P300 data. Psychophysiology, 51(9), 879-904. Publication record
  2. Matsuda, I., Nittono, H., and Allen, J. J. B. (2012). The current and future status of the concealed information test for field use. Frontiers in Psychology, 3, 532. Full text
  3. Rosenfeld, J. P., Soskins, M., Bosh, G., and Ryan, A. (2004). Simple, effective countermeasures to P300-based tests of detection of concealed information. Psychophysiology, 41(2), 205-219.
  4. Offender Management Act 2007, section 30 (use in criminal proceedings of evidence from polygraph sessions). legislation.gov.uk

Accuracy and effect-size figures on this page are taken from the published laboratory research cited above. They are not results from our own testing, and field validation of P300 concealed information testing is limited. A CIT result shows whether a person's brain response distinguished one item from the others; it is not proof of what a person did, and we make no claim that results are admissible in any court or tribunal.

Arrange a CIT Test in Leeds

Tell us what happened and what the other person has been told. We will say plainly whether a test can be built, and then agree a date and place.

Book a CIT Test Ask a Question First