[AmericanInTokyo]

...the former Israeli prime minister Ehud Barak has claimed in an interview. "They are products of a culture in which to tell a lie... creates no dissonance," Mr Barak says. "They don't suffer from the problem of telling lies that exists in Judeo-Christian culture." "Truth is seen as an irrelevant category," he says."There is only that which serves your purpose and that which doesn't. They see themselves as emissaries of a national movement for whom everything is permissible. There is no such thing as 'the truth'." Interviewed by the Jewish historian Benny Morris for an article in the latest issue of the New York Review of Books, Mr Barak not only relates his comments about lying to Yasser Arafat in particular, but to Arab society in general. He says: "The deputy director of the US Federal Bureau of Investigation once told me that there are societies in which lie detectors don't work, societies in which lies do not create cognitive dissonance [on which the tests are based]."

[Fred Nerks]

'...there are societies in which lie detectors don't work, societies in which lies do not create cognitive dissonance [on which the tests are based]."'

Purely cultural differences?

I wonder if arabs and gypsies have a common ancestor?

[Publius6961]

there are societies in which lie detectors don't work, societies in which lies do not create cognitive dissonance [on which the tests are based]."

By definition, that has it exactly backwards.
Cognitive dissonance is what enables individuals to fool the machine.