HR & CCMA-Admissible Testing
Polygraph examinations prepared for HR departments, arbitration panels and regulatory hearings. We are expert witnesses in these procedures and can advise on best practice how and when to use polygraph evidence.
APA ACCREDITED Polygraph Examiners
The Truth, Verified By Science.
Confidential polygraph testing for any business, HR / CCMA & legal, hospitality, retail, security, transport, warehousing, private family matters and pre employment screening / crim check vetting. Every examination is conducted by certified APA trained polygraph professionals using calibrated instrumentation & professional APA std's, ethics & protocols.
23+Years doing polygraph
35,000+ COMPANY tests Conducted
1800+DIFFERENT CLIENTS SINCE 2004
50,000+HOURS DOING POLYGRAPH TESTS
What We OFFER
Our Services & Costs
We deliver defensible results backed by scientific accuracy. From pre-employment screening to corporate investigations, random tests needed as part of contracts (mines and security industry), Cash in Transit , retail, warehousing etc, legal and police requested testing, CCMA and HR hearing expert witness testimony.We offer of the best rates in Cape Town for tests and travel. Discounts for bulk or regular testing. *Please contact us for a quote.*
Pre-Employment Screening
Discreet integrity screening for hospitality, financial and security-sensitive roles. Reduce hiring risk with objective, defensible results. Know who you are getting before employment starts. We can also help with criminal record checks / vetting.
Corporate Theft Investigations
Examinations following stock or financial loss, internal fraud or syndicates. We work alongside your management and HR team to test the right people and gather evidence to prove balance of probability and possible breach of trust.
Private & Domestic Matters
Confidential examinations for personal disputes, false accusations, theft and family matters.
Infidelity & Relationship Testing
Sensitive, non-judgemental testing designed to resolve doubt with clarity. Our examiners are trained in trauma interviewing and emotional de-escalation.
Vetting / screening checks
We are agents to do personal vetting and background checks for pre employment and personal needs.
Our Story
Two decades of forensic credibility
Our head examiner Marc started his working career working for the Military at the Airborne Unit - 44 Parachute Brigade. After his service he joined the world's leading diamond mining company De Beers Marine where he worked 10 years as a Criminal Investigator and Data Analyst. In 2004 he qualified at the American International Institute of Polygraph (AIIP).
He started the company Polygraph Truth Investigations with his father Ian that qualified in 2005. Marc ran the company with other additional examiners until 2021. During Covid Marc moved over to the UK to assist with various programmes. He qualified at PEAK in the USA to conduct Post Conviction Sex Offenders which is a massive programme in the UK. He was one of only 3 private examiners in the UK allowed to do this testing. He left UK late 2026 to return to the UK where his farther Ian had been running the business but had sadly passed away in 2025. He was much loved in CT and had done over 13 000 tests. Marc has done nearly 20 000 tests in his career.
Marc has 2 decades of experience in hearings for companies and CCMA with some ground breaking rulings. He has done over 25 advanced polygraph courses, been to the USA many times for training and worked internationally as a consultant, examiner and trainer.
2004COMPANY Established
95%+VALIDATED POLYGRAPH ACCURACY
1800+COMPANY CLIENTS
33+YEARS DOING FORENSIC INVESTIGATIONS
How It Works
The Science of Polygraph
A polygraph is a diagnostic instrument used by a trained and skilled examiner for the purpose of collecting. measuring and recording selected physiological data obtained from an examinee as he or she answer a series of questions relating to specific issue. This data is then analysed and evaluated.Polygraph test data is a combination of physiological proxies that have been shown to vary significantly in response to different types of test questions as a function of deception and truth telling. Test results are probabilistic descriptions of a margin of uncertainty or level of confidence surrounding a categorical conslusion.The analytic theory of polygraph is that the greater changes in physiological activity are loaded at different types of test stimuli of deception and truth telling in response to relevant target stimuli.The polygraph instrument records data from sensors that measure autonomic and physical activity, including respiration, cardiovascular, electrodermal and somatic activity, in response to the stimulus questions. Several measurable responses have been shown to be statistically correlated with the differences in the strength of responses to lies and truth telling. To determine results a numerical score is assigned to these responses based in a structural model. The result is based on this data indicating either deception or truth telling. A polygraphis for convenience referred to as a lie detector.
Confidential Intake
A private consultation to build rapport, define the specific issue, establish the questions and confirm parameters before any testing begins.
Pre-Test Interview
The examiner explains the polygraph procedure, science and accuracy. Then reviews all questions with the subject.
Instrumented Examination
Computerised polygraph recording captures cardiovascular, respiratory and electrodermal activity across a controlled question sequence.
Scoring & Report
Numerical scoring, independent peer review and a written report issued the same day. It may be possible to give a verbal indication of the results to the client after the tests.
Our POLYGRAPH instruments
Most scientifically advanced & accurate polygraph systems & software
We use the world's most advanced digital polygraph system - Lafayette LX6 and OSS computerised scoring software. Our instruments record charts of the examinee which measures breathing cycles, sweat gland activity, pulse rate / blood volume and body movement. Our software and training enable us to detect countermeasure activity. We also have 2 fully working Stoelting analogue paper and ink systems from the 1970's that we use for media, film sets, displays and in training.Marc has helped in the UK for the likes of the BBC, Netflix, Discovery Channel, Sky sports, Arsenal and Chelsea FC, worked on movie sets and appeared in Hollywood blockbusters, social media podcasts, TV shows, EA Sports, LadBible, The Sidemen and Beta Squad and more. He is the most used examiner in Europe and the UK for media bookings and working with celebrities.
HOW DOES POLYGRAPH WORK
FAQ
Here are some of the general questions and enquiries we have regarding the accuracy, reliability and legality of a polygraph test in South Africa. There are many worries that nervousness may effect the test or some medical issue. Polygraph is rated from 95% accurate according to decades of scientific research by the APA. The science is there, but its important that the examiner is trained, skilled, uses the right technique and runs the correct questions and enough charts to gather the required data to score.
What is a polygraph?
A polygraph is a diagnostic instrument used by an examiner for the purpose of collecting, measuring, and recording selected physiological data obtained from an examinee. This data will then be analyzed . Measuring physiological data obtained from the human body, which are controlled by the Autonomic Nervous System:
1) Respiratory System: Respiratory activity patterns and changes;
2) Cardiovascular System: Heart rate, relative blood pressure, blood volume;
3) Electrodermal System: Galvanic skin response, i.e. sweat gland activity.
Will I fail if I am nervous?
It is normal for a person to feel nervous. The examiner is trained how to calibrate and make the examinee acquainted with the process and instrument. An acquaintance test is done as the 1st chart prior to running the main questions. Everyone has general nervous tension. As this is throughout the test including the baseline truth and lie questions asked in addition to the relevant questions. We look for certain changes on the relevant questions based on the data of other recorded questions and look for significant reactions, on each relevant questions on every sequence of charts run. Every person that has ever done a test is nervous.
How many questions can be asked?
The most accurate technique allows between 2 to 4 relevant questions. The examiner will set these up to cover the issue being testing. The questions will be very similar in wording and meaning, so as to give the examinee variations of this question. A guilty person will then react to all these questions on every sequence where the innocent person has multiple sequences of the questions to clear their name.
Can the results be used in a hearing?
In SA, polygraph results are not treated as stand-alone proof, but they may be considered as part of a wider body of evidence in workplace and labour matters and can be used as balance of probability, breach of trust etc. We have many to hundreds of HR hearings, CCMA, labour court and other procedures defending polygraph results. There is alot of CCMA and case law available on the web.
Can I do a test being pregnant or on medication?
Yes absolutely. There are no studies by the APA that being pregnant can give false readings. But the examinee will have to get permission from a doctor and we wont test after 6 months term. Generally with any meds, if you use this and live a day to day normal life, there is no reason this will effect only the relevant questions asked in the test when there are lots of baseline truth and lie questions asked in different sequences. If you take meds and drive a car, have a job and look after your kids you are able to sit and answer yes and no to questions.
All examinations are handled in strict confidence, with full documentation retained for hearings and CCMA evidence.
Get In Touch
Contact us
+27 72 269 1317
polygraph@iafrica.com
Testing throughout South Africa at client premises
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