introduction : introduction Why are the polygraphs introduced?
What are polygraphs?
What is the lie behind the lie detector?
lie detector : lie detector It is an instrument which is a combination of medical devices that are used to monitor changes occuring in the body
TYPES OF POLYGRAPHS : TYPES OF POLYGRAPHS Analog polygraphs
ANALOG POLYGRAPHS : ANALOG POLYGRAPHS
DIGITAL POLYGRAPHS : DIGITAL POLYGRAPHS
CIRCUIT DIAGRAM : CIRCUIT DIAGRAM
POLYGRAPH EXAMINERS : POLYGRAPH EXAMINERS During a polygraph exam there are only two people in the room. One is the person conducting the exam and the other is the subject.
LIE DETECTOR TEST : LIE DETECTOR TEST Pretest
Counter Measures : Counter Measures Sedatives
Antiperspirant on fingertips
Tacks placed in the shoe
Biting tongue, lip or cheek
CONCLUSION : CONCLUSION There is the possibility of two types of errors to occur falsepositive and falsenegative. So this should not be the only basis to punish a person on his crime.
THANK YOU : THANK YOU ANY QUERIES???