The present test is almost entirely new, both in its form and in its content. The nearest approach to this particular test was made by Dr. Agnes L. Rogers at the suggestion of Professor Thorndike, when she prepared a list of six problems of which the following is a good sample: “P is larger than Q, R is smaller than Q, therefore P is ........ R.” The blank is to be filled in. It will be observed that the present Mentimeter differs from Doctor Rogers’s test in that names of familiar persons or objects are used in place of the capital letters and that four conclusions are stated from which the subject is to select the proper one, rather than leaving to the subject the formulation of his own conclusion. Because of its newness, it will be impossible to state here just what is measured by this test, but certainly the ability to read and understand the words is one factor, and the ability to think clearly about the logical implications of these words is another very important element making for success. The ability to see the relations between the words is probably as near to what may be called “logical ability” or “reasoning” as to any other popularly recognized “mental qualification.” Although Doctor Rogers found a coefficient of correlation of .65 between her form of the logical reasoning test and a composite measure of mathematical ability, the present Mentimeter is so different that its true value can only be indicated by the comparisons which its users will be able to make between their results and the most accurate measures obtainable of special ability. This test will probably have very little usefulness in commercial or industrial fields, although it may be very helpful for a professional group such as lawyers, educators, etc., in the selection of clerical or professional assistants. In the public schools, it is quite certain that it should not be used below the high school grades. Even in the high school, it is probable that only those with very great ability in handling abstract ideas and symbols of ideas will be able to make a high score. The subject matter of those statements which appear in the test is such as would not be found in ordinary life and has very little value in itself. As an entertainment feature, this test will not be successful except among a very specially selected group of people who believe themselves to be extraordinarily keen intellectually. It might be held in reserve as a special “stunt” for any persons who seem to think that they have demonstrated their “high-brow” qualities by making high scores in other tests. Shortening the time limit from five minutes to three minutes would further add to the consternation of such persons. _Directions for Giving the Test._