Nonombre,

I suppose the deception on the examiner's part would be the lack of full disclosure about the test.  Do you explain to your examinee's that you will be asking a series of questions in the in-test, however only certain questions will be scored while the remainder is filler?  A naive examinee believes all questions to hold the same importance, even the ridiculous, "Are the lights on in this room?" for example.

To me the R/I sounds to be more like a GKT.

The R/I is believed to have a higher false positive rate, but lower false negative rate than the PLCQT (see Matte). While it doesn't require the examiner deception of a PLCQT, to be effective, the examinee needs to believe the polygraph will be accurate in their examination and so there is a bit of chicken and egg situation here. Since the relevants are stark and obvious, many will not be sufficiently calmed by the examiner and may score sufficiently above baseline to be found deceptive. Another problem is individual differences. Early in the history of polygraphy, examiners tried various techniques to account for these variances and the PLCQT evolved as an improved approach - in spite of the obvious ethical issues involved.

One problem with both R/I and PLCQTs are that examinees who are familiar with the techniques involved may yield higher false positives on the R/I while the PLCQT may yield higher false negtatives as the test essentially changes into a DLCQT.

There is some, fairly polarized debate about the DLCQT, especially re false negatives. Much speculation, too little actual research.

Marty

I have heard of more pre-employment poly's going this way in my area for law enforcement...i dont know if reacting to two different relevant questions is the way to go..anyone have input?
Anxiety