Voice stress analysis widely used for truth verification

Voice stress analysis widely used for truth verification
Published: 12 January 2017 (4852 Views)
The use of lie detection tests has become topical in recent weeks, following reports in the local media last month that Zimbabwe Revenue Authority staff are to be given polygraph tests

Tests to determine the honesty of staff have been in use for a long time in Zimbabwe, as elsewhere, particularly where fraud or thefts are suspected and in areas where honesty is of the utmost importance, as is the case where money and payments are handled.

Safeguard Investigations for years used a Psychological Stress Evaluation (PSE) test to assist it in its investigations and to test the honesty of those seeking employment with clients who needed to ensure the personnel they were employing were honest.

Currently it uses Voice Stress Analysis technology, developed by VIPRE Technologies in the United States, for truth verification.

The Voice Stress Analysis system identifies stress in the voice as it passes through the voice folds in the throat, in response to a question that has consequences and requires a yes or no answer.

Unlike the polygraph that uses various body attachments to measure pulse, respiration and skin conductivity, the VIPRE system employs a less invasive voice recording method to obtain its result. It automatically generates a score-able chart that is analysed by the operator.

As with the polygraph, those subject to the test are asked a series of questions, including control questions to which the answers are known.

However, there are no wires connecting the subject to the testing system. The system just uses a microphone, which self-adjusts to background noises automatically.

The technology is used by Safeguard Investigations to verify for a client the integrity and honesty of a job applicant and employees in high risk areas such as finance, till operating, cash offices and transportation.

It is also used to test the honesty of suspects in an investigation and to confirm the integrity of Safeguard personnel, given the importance of honesty within the security profession.

While it is understandable that employees may feel anxious about undergoing truth verification tests, those who have nothing to hide should be relieved that such tests are likely to exonerate them from any wrong-doing.

"The process serves to exonerate, rather than implicate and separates the innocent from the guilty," explained Safeguard Investigations general manager Steven Jennings.

"It should also be seen as a positive for one's CV. The fact that a person has been tested (maybe a number of times in sensitive and high risk areas) and has consistently passed must be a significant advantage when wishing to progress in an organisation or move to other employment,c he said.

Safeguard Investigations conducts Voice Stress Analysis testing under the supervision of a qualified psychologist. It complies in all respects with legislation regulating the use and control of this equipment.

Voice Stress Analysis is widely used nowadays for truth verification by police forces and in insurance fraud investigations in many countries.

Safeguard Investigations carries out a wide variety of private investigations, including undercover operations. It has found the used of Voce Stress Analysis useful in eliminating suspects when investigating thefts and fraud, as well as in assisting clients to verify the honesty of potential or existing staff.

- Agencies

 0

You May Like These Videos

Comments

There are no comments.

Latest stories

UK Zimbabweans die of HIV after being fooled by faith healers

by Dr Masimba Mavaza | 19 August 2018 | 74 Views

Why Judge Chigumba should resign ahead of ConCourt ruling

by Don Chigumba | 19 August 2018 | 65 Views

Dr Nkosana Moyo saddened by the death of Kofi Annan

by Simbarashe Sithole | 19 August 2018 | 50 Views

Police blocks prayer meeting in Harare

by Stephen Jakes | 19 August 2018 | 60 Views

ZEC has proven that 10 + 4 = 40

by Ryton Dzimiri | 19 August 2018 | 41 Views

Zec gaffe draws brickbats

by Staff reporter | 19 August 2018 | 62 Views

Anxiety grips Zimbabwe ahead of presidential poll hearing

by Staff reporter | 19 August 2018 | 53 Views

Churches pray for Con-Court impartiality

by Staff reporter | 19 August 2018 | 44 Views

Mangoma backs Chamisa

by Staff reporter | 19 August 2018 | 50 Views

'Moyo's caretaker commissions illegal'

by Staff reporter | 19 August 2018 | 48 Views

Chamisa ropes in Mandela's lawyer

by Staff reporter | 19 August 2018 | 54 Views

Mnangagwa thrown under the bus?

by Staff reporter | 19 August 2018 | 66 Views

Violence returns

by Staff reporter | 19 August 2018 | 49 Views

Why I am backing Chamisa over Mnangagwa

by Staff reporter | 19 August 2018 | 52 Views

Mnangagwa hits back at Mugabe

by Staff reporter | 19 August 2018 | 47 Views

Chamisa's 'rigging evidence'

by Staff reporter | 19 August 2018 | 48 Views

Why Chamisa beat Mnangagwa in his own backyard

by Staff reporter | 19 August 2018 | 54 Views

WATCH: Grace Mugabe takes the mic at 'Blue Roof'

by Staff reporter | 19 August 2018 | 47 Views

Mliswa calls for unity

by Staff reporter | 19 August 2018 | 36 Views

'Thokozile Mathuthu led call for women's quota'

by Staff reporter | 19 August 2018 | 87 Views

Chamisa hooks a 'fishy' Kenyan expert

by Staff reporter | 19 August 2018 | 190 Views

Shady NGO caught offside on violence

by Staff reporter | 19 August 2018 | 104 Views

GNU is not good for both Zanu-PF and MDC-Alliance

by Bishop | 19 August 2018 | 107 Views

Students win a trip to France

by Staff reporter | 19 August 2018 | 63 Views

National Railways on the mend

by Staff reporter | 19 August 2018 | 64 Views

Sadc demands end to sanctions on Zimbabwe

by Staff reporter | 19 August 2018 | 53 Views

Harare in graveyard space headache

by Staff reporter | 19 August 2018 | 60 Views

SADC edges to visa-free regime

by Staff reporter | 19 August 2018 | 54 Views

How the mighty have fallen, Bosso held by Nichrut

by Staff reporter | 19 August 2018 | 61 Views

MDC-Alliance files answering affidavits

by Staff reporter | 19 August 2018 | 67 Views

USAid funds abusers push for Zimbabwe GNU

by Staff reporter | 19 August 2018 | 68 Views

Chamisa's Komichi granted bail

by Staff reporter | 19 August 2018 | 62 Views

Decolonising Political Philosophy in Africa

by Cetshwayo Mabhena | 19 August 2018 | 56 Views

Psychological evaluation for 'car thief'

by Staff reporter | 19 August 2018 | 57 Views