candy wrote on Jan 15
th, 2008 at 1:17pm:
Ej
My research indicates that the Stim test is used to convince the examinee that polygraph is accurate, scientific and is able to differentiate between truth and even a teensy lie.
The stim test is in the same vein as the card trick and the silent answer test. The latter being an exercise in gross stupidity.
The blind stim test cannot be compared to a GKT because the one holds no negative outcome for the examinee, whilst the other does.
No science is involved. Just plain old dupery. A scam-sham of note.
Not so Candy.
The stim test is used for the following reasons.
1. To familiarize the examinee with the sometimes nerve-racking"feel" of having the components attached to the examinee. Very important.
2. To familiarize the examinee with the tone of voice of questioning (monotone) versus the more articulate conversational tone of the pre-test.
3. The concept known as "Individual Subject Specificity" is held during the pretest----in that say, an elderly person might have diminished galvanic reactions, so mental notes can be taken. I once tested a professional painter whose lungs were so damaged that his breathing looked like that of a dolphin's. Purely unscorable data noise. Additionally, some examinees have higher or lower threshholds for arousal, so the instrument sensetivity settings are done during the stim test---in order to extinguish "data noise" or to turn up those features which may appear on the screen as being too small---typically because a component is on looser than say, the last test ran. Keep in mind that all arousals are relative to each other, regardless of the individual's own homeostasis (balance.)
4. To demonstrate to the examinee that the instrument can differentiate between stress and memory. I always showed the examinee their stim test---and they were often suprised that despite their nervousness, their charts were quite placid. People, even George himself, seem to be fixated on the notion that mere nervousness is what makes for "heavy ink."
5. To familiarize the examinee and examiner the ability of the examinee to listen and follow instructions. We cannot give IQ tests per se, but the stim test can often times be a revealer of an examinee's mental awareness.
6. And lastly, the stim test is to help get the examiner mentally and logistically ready for the test. Many times during the stim test, I have noticed that I placed a component on the examinee too loose, crooked, or too tight. The stim test is like stretching for a runner. It is the closest to a warm up, or a dress rehearsal that we have.
So, you are wrong in every respect about the stim test. Learn something---ignoring a veteran of the field for which you are researching is "gross stupidity."