A technique for criterion keying a test is given. Multiple-choice tests can be devised so that there is no predetermined right response. The alternative may be selected on the basis of judgment. One way to attain this judgment is to give the test to people who have known scores on an appropriate criterion. This calls for keying as correct those alternatives that are most frequently picked by those who have high criterion scores. This method is based on the available item statistics which were tabulated in the course of routine IBM machine item analysis by the Educational Testing Service. Mathematical formulas are provided. (SGK).