BREAKING: Delhi Court orders for ‘Lie Detection Test’ on Jagdish Tytler

NEW DELHI—In a case pertaining to killings of three innocent Sikhs namely Badal Singh, Thakur Singh and Gurcharan Singh in Pulbangash area of North Delhi by Hindu mob during 1984 Sikh genocide, a Metropolitan Court of Delhi has ordered Jagdish Tytler to undergo ‘Lie Detection Test’ on March 16.

Notably, the probing agency Central Bureau of Investigation (CBI) had earlier sought permission from the Court to conduct lie detection test on Jagdish Tytler. But Jagdish Tytler had refused to undergo ‘Lie Detection Test’ arguing before the court that there was no reason for him to undergo a lie detector test.  He had filed an application before the Court stating that the CBI plea for lie detection test was a “gross misuse of law”.  He had further blamed the CBI for filing such pleas with “malafide intention”.

It is pertinent to note here that the CBI had already submitted a closure report regarding the case three times and had even given a clean chit to Jagdish Tytler. Later, an arms dealer Abhishek Verma had deposed before the Court that Tytler had bribed the prime witness of the case by transferring a huge ransom on the name of Narinder Singh (son of Chief witness) to Canada via Hawala. The Court had ordered the CBI on December 4, 2015 to re-probe the case.

LIE DETECTION OR POLYGRAPH TEST

What is a Polygraph Test?

A polygraph, popularly referred to as a lie detector, measures and records several physiological indices such as blood pressure, pulse, respiration, and skin conductivity while the subject is asked and answers a series of questions.

A polygraph machine records the body’s involuntary responses to an examiner’s questions in order to ascertain deceptive behaviour. The test measures physiological data from three or more systems of the human body-generally the respiratory, cardiovascular, and sweat gland systems-but not the voice.

Are lie detector test accurate?

The accuracy of polygraph testing has long been controversial. An underlying problem is theoretical: There is no evidence that any pattern of physiological reactions is unique to deception. An honest person may be nervous when answering truthfully and a dishonest person may be non-anxious.

How does a lie detector test work?

If you’re like most people, lying makes your heart race. It makes you pant. It drives up your blood pressure and makes you drip sweat. A polygraph machine detects lies by looking for signs of these physiological changes.

Testing Procedure:

The examiner typically begins polygraph test sessions with a pre-test interview to gain some preliminary information which will later be used to develop diagnostic questions. Then the tester will explain how the polygraph is supposed to work, emphasizing that it can detect lies and that it is important to answer truthfully. Then a “stim test” is often conducted: the subject is asked to deliberately lie and then the tester reports that he was able to detect this lie. Guilty subjects are likely to become more anxious when they are reminded of the test’s validity. However, there are risks of innocent subjects being equally or more anxious than the guilty.Then the actual test starts. Some of the questions asked are “irrelevant” or IR (“Is your name Fred?”), others are “diagnostic” questions, and the remainder are the “relevant questions”, or RQ, that the tester is really interested in. The different types of questions alternate. The test is passed if the physiological responses to the diagnostic questions are larger than those during the relevant questions (RQ).