HOW IT WORKS
A POLYGRAPH EXAM CONSISTS OF THREE PHASES:
PRE- TEST INTERVIEW: MEET AND GREET, THE EXAMINER WILL THEN REVIEW THE FORMS AND QUESTIONNAIRES WITH THE EXAMINEE AND COLLECT ALL NECESSARY INFORMATION.
DATA AND CHART COLLECTION: THE EXAMINER WILL RUN THE ACTUAL TEST AND COLLECT THE CHARTS.
POST TEST INTERVIEW: GIVES THE EXAMINEE AN OPPORTUNITY TO DISCUSS ANY CONCERNS OR ADDITIONAL INFORMATION WITH THE EXAMINER BEFORE THE SESSION IS CONCLUDED.
The sensors consist of a standard doctor’s blood pressure cuff on the left arm that measures changes in blood pressure and pulse rate, two corrugated rubber tubes on the upper and lower chest that measure chest movement and breathing. Two metal tabs for the fingertips that measure sweat gland activity through the sweat pores and a clip on the middle finger that measures changes in blood volume. These sensors detect changes in the body that are uncontrollable, and deception will be seen whenever a person tells a lie.