Quote:
Originally Posted by J_Player
Hi Theseus,
Here is how I have your test protocol figured:
1. The basic attribute of the Examiner that you want to see tested is it's tendency to "pull towards" or otherwise indicate a gold target at some distance away. This is well documented in the claims of Rangertell, as well as for other target materials. This seems like a good attribute to test.
2. For your test protocol, you want to designate five different locations that are separated from each other in a semicircle by at least 10 feet, but less than 30 feet distance from each other. The target sample will be hidden in one of these five locations during the double blind portion of the test. (I am assuming that the semicircle you requested is a half circle of 180 degrees, and having a radius of at least 10 feet and less than 30 feet, with possible target locations at any of the five equally spaced paper cups set at least 10 feet apart from each other, or up to 30 feet apart if a 30 foot radius is used).
3. The method for hiding the gold sample will to be to put it under a paper cup, or a paper plate, or any other convenient way that conceals the location from the operator of the Examiner. The acceptable substitute methods of concealing the location of the target may be used in place of the cups described in the protocol (2 above).
4. The double blind portion of the test will include exactly five trials.
5. There will be shown a trial before and after the five double blind tests. The trial before and after will be done when the operator of the Examiner can see the target in plain sight, or knows where it is located.
6. A hat will be used for drawing a number from 1 to 5 to determine which hiding location is used for the next trial in the five double blind trials. All five of the numbers will be placed in the hat from which one is drawn each time a trial is made.
7. All five of the locations where the target may be hidden will have the paper cup or other substitute moved before each double blind trial so that none of the locations appears to be unmoved.
I presume the operator of the Examiner will be standing away from the test area until he is ready to make a trial. Then, when he makes the trial, he will walk to a stationary location at the center of the circle that is used to map the semicircle, and will not be permitted to move from that spot until he says the trial is completed. The location that the Examiner is pointing at the time the operator announces he has finished the trial will be observed to see which of the five possible locations it is pointing to. In the event it is not pointing exactly at any of the five locations, then the location on the radius of the semicircle will be marked and measured to determine the closest of the five locations, and the closest of the five possible target location will be used as the location detected for the trial. Upon completion of the trial the operator must move away from the stationary location until he is ready to make another trial.
I also presume that he will be permitted to move his arm in any way or direction he is able during the trial, or to not move it, at his discretion as long as he does not take any steps away from the fixed location where he makes the trial from.
And finally, I am presuming a single pre-test trial and a single post-test trial will be done in the exact same manner as the five double blind trials, except the operator of the Examiner can see or will know where the target is located. And the operator will be allowed to walk or make any tests he wants before the pre-test begins including walking close to the target while he can see it or not see it.
Does this summarize your test protocol?
If so, the test you requested can be performed as soon as WesP is ready to perform tests.
Best wishes,
J_P
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That appears to be an accurate description of the test I outlined.
Of course, we did not iterate all the normal DB precautions that must be observed, such as; the operator is not in any way exposed to the hiding of the target prior to the trials, a RECORDER person (standing in the area of the operator) records the chosen location (and Trial number) after the operator decides on a location, BUT the exact location of the target is not revealed to the RECORDER or the OPERATOR at that time. After the RECORDER and OPERATOR leave the area a SCORER checks which location actually contained the target, and notes it on a separate document, where the Trial number and Location is recorded. The SCORER and the person hiding the target, should probably NOT be the same person.
Following the 5 trials and the Post-test, the
two documents; one from the RECORDER and one from the SCORER are compared and only then are the results known as to how many locations were correctly identified.
The reason for the Pre-test and the Post-test should be intuitively obvious, but I will iterate here.... These tests are done to illustrate the device and operator are able to find a valid target in plain sight, or one that the operator was privy to it being hidden.
Also, another fact that should be obvious, but I will state it anyway; During ANY of the TESTS (the 5 trials) should there be any one in the area of the operator (in view of the operator) that has knowledge of where the target is hidden.