SA Labour Dynamics provides polygraph testing as an additional service to our clients:
The polygraph is an electronic instrument that measures a person’s physiological reactions to stress. The polygraph technique is based on our bodies’ fight-or flight response to stressful situations (the stimulation of the sympathetic nervous system).
When we feel threatened, internal changes occur throughout our bodies, and the polygraph monitors several of those changes (heart rate, blood pressure, breathing, and sweat gland activity).
In a well-run polygraph there are several different types of questions. Sophisticated numerical evaluation of polygraph charts is the basis for decisions of deception or truthfulness.
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