Polygraph or lie detector

Catch the liars   Saturday, March 06, 2004, 00:00 GMT
Do you call it a polygraph or a lie detector? If someone lies do they need a polygraph test or a lie detector test?
Ryan   Saturday, March 06, 2004, 01:45 GMT
Polygraph is the proper name for it and is what all the criminal justice professionals call it. Lie detector is the colloquial name for the device.