◆ SpookStack

Approved For Release 2001/03/07 : CIA-RDP96-00792R000300330001-8 LN734-85 not completely reliable. Structurally, it is obvious that only with perfect test materials can these five conditions be met. With imperfect test materials, only the last three of these conditions can be met. We believe that fulfilling the last three of these conditions only meets the minimum strictness requirements for test material, and all five must be met to fulfill the total requirements. For clarification purposes, we will give a further explanation of these strictness procedures. , First, what is meant by sealed in an irreversible manner? This means that once the container is altered, under the design conditions of the experiment, it cannot be returned to its original condition, and thus unable to avoid detection. The first use of the term irreversible container was in an article in "Joint Testing Report”. Generally, there are two ways of manufacturing an irreversible container, One way is to usé material that if altered on the test site cannot be returned to its original condition, such as containers made of glass or hard plastic. The other way is to install.on the container a mechanism which once altered cannot be returned to its original condition. An example of this would be the string seal system used in the joint testing report (that was to a install a pull string mechanism on the container). Next, if the test object has a unique mark on it , the subject cannot, in the test process, substitute a similar object, and he cannot make a copy of the test object during the test. Therefore, unique test material will prevent the subject of an experiment from pulling a switch. In recent years, researchers -have used many different methods to ensure the uniqueness of the test material. Some of the more common ways are: To use a particular stamp of write a certain symbol. The second method is called the copy method. This is done by using a sheet of transparent paper and placing it over the test material. Using a color brush, a unique symbol is drawn on the paper which makes a copy of the test material at the same time. The transparent paper is kept to use a later check against the test maeterials. The third method is called the tiger method. A piece of the test material is cut away in a random fashion, and the cut away piece, called the "mother piece" is taken out and checked with the test waterial. The fourth method is called a combination method because it is a combination of the methods described above. For example, one might use both the tiger and the copy method. This will increase the uniqueness of the test material. All in all, the second, third, and fourth methods are strict, the first method is simple. If the contents of the test object in the test material are unimown to the subject of the test, and if they aré also unknown to the persons monitoring the test, then this is the double blind method. The double blind method can prevent all kinds of conscious or unconscious prompting. If the probability of the subject guessing the contents of the test object approaches zero, then the test material becomes unguessable. If the test object is selected at random from a large sampling pool, this will give the test material unguessability. There are specifically two major methods: The first “method is to randomly select the test object from a large enough sampling pool -50- Approved For Release 2001/03/07 : CIA-RDP96-00792R000300330001-8