IS the question, have you ever driven impaired, a control or relevant question?
Impaired, if not defined, would be wide open to interpretation (some would even say you are impaired after one drink) and therefor, a control.... however if impaired was defined in the pretest, it would become relevant.

Anyone agree?

Covert 1,

You wrote in part:
Quote:


Note that although it is standard practice to review the questions to be asked during the "in-test" phase during the "pre-test" phase, whether or not the polygrapher conducts such a review, polygraph chart readings have no validity. For more on the scientific status of polygraphy, see Chapter 1 of The Lie Behind the Lie Detector and the sources cited there. See also Professor William G. Iacono's recent article, "Forensic 'Lie Detection': Procedures Without Scientific Basis."

Orion,

As has been discussed elsewhere, a question about driving while under the influence of alcohol is almost certainly a probable-lie "control" question in the context of a pre-employment polygraph interrogation, although substantive admissions with regard to drunk driving might serve as grounds for disqualification.