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George Maschke (Guest)
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Zone Comparison "Test" (ZCT)
Nov 20th, 2000 at 9:27pm
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[pre]
The Zone Comparison "Test" (ZCT) is one of the most commonly-used
polygraph formats, but is not addressed in the 1st electronic
edition of [i][url=http://antipolygraph.org/pubs.shtml]The Lie Behind the Lie Detector[/url][/i]. It is a form of
"Control" Question "Test" and is considered a single-issue "test"
as opposed to the Modified General Question "Test" (regarding
which, see Appendix A of of [i]The Lie Behind the Lie Detector[/i]).

In a polygraph dragnet to find out who leaked information to the
press, I expect that a variant of the ZCT would be used.

The following information on two varieties of the ZCT
is extracted from chapter 11 of James Allen Matte's
[i]Forensic Psychophysiology Using the Polygraph[/i].
Other versions also exist.

[b]DoDPI Bi-Spot Zone Comparison Test Structure.[/b]

l. [b]Irrelevant[/b]  Is today Monday?

2. [b]Sacrifice Relevant[/b]  Regarding the incident you reported,
  do you intend to answer truthfully each question about that?

3. [b]Symptomatic[/b]  Are you completely convinced that I will not ask
  you a question on this test that has not already been reviewed?

4. [b]Non-Current Exclusive Control[/b]  Prior to 1993, did you ever lie
  to anyone in a position of authority?

5. [b]Relevant[/b]  Did you lie about that man forcing you to have sexual
  intercourse with him?

6. [b]Non-Current Exclusive Control[/b]  Prior to this year, did you ever
  lie about something you are ashamed of?

7. [b]Relevant[/b]  Did you lie about that man forcing you to have sexual
  intercourse with him in his apartment?

8. [b]Non-Current Exclusive Control[/b]  Prior to 1990, did you ever lie
  to get out of trouble?

9. [b]Symptomatic[/b]  Is there something else you are afraid I will ask
  you a question about, even though I have told you I would not?



[b]Utah Zone Comparison Technique[/b]

1. Irrelevant

2. Sacrifice Relevant

3. Symptomatic

4. Control

5. Relevant

6. Control

7. Relevant

8. Irrelevant

9. Control

10. Relevant

Matte notes regarding the Utah technique that "at all times
relevant test questions responses at each (R) position are
compared only with the responses to the previous control
question position..."

Persons using polygraph countermeasures to protect against a
false positive outcome should not bother memorizing question
orders, but should learn to recognize "control" questions on
the fly. See chapter 3 of [i][url=http://antipolygraph.org/pubs.shtml]The Lie Behind the Lie Detector[/url][/i] for
details on how to recognize "control" questions.

[/pre]


  
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George Maschke (Guest)
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Re: Zone Comparison "Test" (ZCT)
Reply #1 - Nov 17th, 2000 at 6:15pm
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[pre]
In his article, "The Zone Comparison Test," [i]Polygraph,[/i] Vol.
27 (1998), No. 2, pp. 108-122, former National Security
Administration (NSA) polygraph program director Norman Ansley
provides the question sequence for the Department of Defense
Polygraph Institute's version of the Zone Comparison "Test."
The following citation is from p. 118:

      [b]Zone Comparison Test Question Sequence[/b]

  [b]Department of Defense Polygraph Institute 1991[/b]

1.  Irrelevant. Are the lights on in this room? Yes.

2.  Sacrifice Relevant. Regarding that stolen money, do you
    intend to answer truthfully each question about that?
    Yes.

3.  Symptomatic. Are you completely convinced that I will not
    ask you a question on this test that has not already been
    reviewed? Yes.

4.  Control. Prior to 1990, did you ever steal from someone
    who trusted you? No.

5.  Strong relevant. Did you steal any of that money? No.

6.  Control. Prior to coming to Alabama, did you ever steal
    anything? No.

7.  Relevant. Did you steal any of that money from the
    footlocker? No.

8.  Symptomatic. Is there something else you are afraid I
    will ask you a question about, even though I have told
    you I would not? No.

9.  Control. Prior to this year, did you ever steal anything
    from an employer? No.

10.  Weak Relevant. Do you know where any of that stolen
     money is now? No.

                      [b]SKY - Optional[/b]

11.  Suspect. Do you suspect anyone in particular of 
     stealing any of that money? No.

12.  Knowledge. Do you know for sure who stole any of that
     money? No.

13.  You. Did you steal any of that money? No.
[/pre]
  
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