METHODS: 17472 subjects were simultaneously interviewed with continuous addition test, word discriminationtest and Minnesota Multiphasic Personality Inventory (MMPI) by computer.
The fast discriminationtest in lab, atmosphere condition test, suitability test and spot test of gas antirust are done from the basic factors of gas slow-corrosion agent antirust function.
In Survey of Content Validity, 36 items were founded to be related to their dimensions respectively, but not to others, the achievement ratio of aggregation test and discriminationtest was 100%.