Use of polygraphs grows in Texas


By Diane Jennings
The Dallas Morning News

AUSTIN, Texas — True or false? A polygraph exam is a good way to tell if a suspect is lying.

Correct answer? Depends on whom you ask. But after decades of being widely discredited, the use of polygraphs, commonly known as "lie detectors," has soared, thanks to national security efforts at the federal level and sex-offender monitoring at the state level.

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