Sullivan said he decided to start the polygraph tests after taking one himself when he was hired.
Although not yet foolproof, these three methods do offer possible alternatives to the antiquated techniques of the polygraph.
He worked on improving the efficiency of the polygraph the lie detector and conducted some 15, 000 tests with the instrument.
The polygraph results are unclear, and police interrogation of the boy and their search of his vehicle did not provide any leads.
Just as the polygraph will let some who are lying slip by, it can also falsely identify others who are not lying.
Certain individuals, know matter what they say, will fail the polygraph.
Certain individuals are capable of such deception. (If the perpetrator is in some state of denial, for example, their responses may not register on the polygraph.) Tommy, we know, successfully lied to Dr. Lesse.
While it is possible Tommy told the truth back then and is lying now, such a scenario seems highly unlikely. (Why would Tommy start telling self-implicating lies after previously telling the truth?) More probably, Tommy was able to fool the polygraph.
I've advocated we use the polygraph exam to detect unlawful activity or drug use, but there, to my knowledge, are no questions on that that relate specifically to a person's attitude on race, and I think that's something that perhaps we need to look at.
Two problems with polygraphs: First, they only work about 80% of the time, according to the American Polygraph Association.
The nine remaining agents took polygraph tests, and although none of them failed, some responses led to the loss of several jobs, he added.
He has agreed to a police search of his apartment and has offered them the results of a polygraph examination administered by his own expert.
Current workers at Fort Detrick are being given polygraph tests by the FBI to see if any leads may materialize.
Justice Department attorneys conducted interviews with Huang over 20 days and he took several polygraph tests before the deal was made, the sources said.
Why, then, despite failing a polygraph test, was the chief suspect at Los Alamos National Laboratory fired only after the spy story broke?
Police did question and administer a polygraph to a boy in the community who Hall liked and was friendly with.
He told reporters two weeks ago that he had nothing to do with the attacks, had never worked with anthrax and had been told by the FBI that he had passed a polygraph test and was not a suspect.
He revealed that half the officers in a key unit failed a polygraph test last year.
King said Tuesday night that Sullivan's answers to his committee's questions disclosed that three of the 12 Secret Service agents involved in the scandal had refused to cooperate with authorities and submit to a polygraph test.
Steps taken so far include bringing home the agents involved, stripping them of their security clearance and questioning that has included at least one polygraph exam.
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