SA polygraphist ventures inside the mind of criminals (and the lies they tell)

Professional polygraphist Silke Kaiser has spent more than 10 years of her life exposing lying criminals.

She's collected polygraph evidence for a number of legal matters including cash-in-transit trials, corporate litigation and farm murder cases.

Read more: Crime intelligence needed to curtail cash-in-transit heists, says expert

Kaiser has written a book, titled GOTCHA: A polygraphist lifts the lid on crime in South Africa, which dives into the minds of South African criminals and how they think.

She explains that her polygraph system uses voice stress analysis and has a highly credible success rate.

I've always been fascinated about crime.

Silke Kaiser, author and professional polygraphist

Polygraphing put me into the crime wave that's gripping South Africa.

Silke Kaiser, author and professional polygraphist

I've done cash-in-transit heists. I've done a lot of farm attacks.

Silke Kaiser, author and professional polygraphist

The skill of lie detector testst lies within the examiner.

Silke Kaiser, author and professional polygraphist

I always say the truth will force itself out eventually.

Silke Kaiser, author and professional polygraphist

I use voice polygraph and that relies on the Lippold tremor.

Silke Kaiser, author and professional polygraphist

Kaiser discussed the effectiveness of lie detectors tests and detailed her decade-long career administering them.

Take a listen to her insights into the criminal mind:


This article first appeared on CapeTalk : SA polygraphist ventures inside the mind of criminals (and the lies they tell)


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