Intro- testing techniques PP#5 Flashcards
Comparison Question Test
Also called Probable Lie Comparison Test or Control Question Test
It is a deception test.
You will learn the following:
Federal ZCT
Federal “You Phase” or Bi-Zone ZCT
Federal AFMGQT
Utah techniques
DLST
Peak of Tension Test
This is a recognition test.
Asks specific questions about the crime that only the investigator, examiner and guilty subject would know.
Basic Rules for Proper Relevant Question Formulation
Must be simple and direct.
Must not involve legal terminology.
Must be answerable only with a YES or NO.
NO is the preferrable answer.
Should be as short as possible.
Meaning must be clear and unmistakable.
Must be phrased in words that the examinee can easily understand.
Must NOT be in the form of an accusation.
Examinee would then believe the examiner has already formed an opinion about their truthfulness.
Must never contain an inference which presupposes knowledge on the part of the examinee.
Must refer to one single offense only (in a single question or test).
Must refer to only one element of an offense (in a single question).
Must ask each question in an even, monotone voice.
Must not be deliberately emotion-evoking.
Avoid adverbs or adjectives if possible.
“Did you brutally stab that man?”
SEMANTICS
Mutual understanding of the words used in the question
Mutual understanding of how those words are perceived.
Must ask what the examinee’s perception is of the discussed topics
CONSPECNIFICANT
Consistent
Specific
Significant
Systematized
General factors in PLC test analysis and specific factors in RI test analysis.
Possible Pneumograph Indicators of Deception
Change in rhythm or regularity
Slowed breathing *CM **
Change in amplitude or volume (especially suppression) **
Change in Inspiration/Expiration (I/E Ratio)
Notched or serrated I/E strokes
Change in baseline (leaves and returns)
Loss of baseline (never returns)
Hyperventilation *CM
Suppression (or downward suppression from stable tracing)**
Apnea blocking**
Apnea holding *CM
** Currently supported by research as deceptive physiology.
Possible Galvanograph Indicators of Deception
Vertical rise at stimulus (question)**
Complex response or “Double Saddle” after the vertical rise**
Long duration of response following the vertical rise**
**Currently supported by research as deceptive physiology
Possible Cardiosphygmograph Indicators of Deception
Increase and decrease in BP**
Long duration of BP change**
Increase in pulse rate
Decrease in pulse rate**
**Currently supported by research as deceptive physiology
Increase in amplitude (pulse pressure)
Decrease in amplitude (pulse pressure)
Increase only in BP
Decrease only in BP
Appearance or disappearance of extra systoles (PVCs)
Appearance, disappearance or change in the position of the dicrotic notch
