───────────────┬───────────────────────────┬─────────────────────────── │ 1908 Scale │ 1911 Scale ───────────────┼───────────────────────────┼─────────────────────────── Scored below │ Pass all but one in basal │ Pass all in basal age │ age │ ───────────────┼─────────────┬─────────────┼─────────────┬───────────── │ Per cent. │ Cases │ Per cent. │ Cases ───────────────┼─────────────┼─────────────┼─────────────┼───────────── IX.0 │ 0.0│ 0│ 0.0│ 0 IX.8 │ 0.2│ 1│ 0.5│ 3 X.0 │ 0.3│ 2│ 0.5│ 3 X.8 │ 1.1│ 7│ 1.2│ 8 XI.0 │ 1.2│ 8│ 2.0│ 13 XI.8 │ 10.0│ 65│ 8.1│ 53 XII.0 │ 10.4│ 68│ 13.0│ 85 XII.8 │ 23.6│ 153│ 29.1│ 190 XIII or XV │ 23.6│ 153│ 29.7│ 194 ───────────────┴─────────────┴─────────────┴─────────────┴───────────── Thrown into percentages of the group of 653 children living in these districts, it is evident that a test score of XI raises any person above the group of intellectual deficients. The percentage that tested this low, _i. e._, under XI.8, with the 1908 scale, was 10.0 (65 cases) and this would probably be increased if those who had graduated from the eighth grade had also been tested. The percentage testing under the same position in the 1911 scale is 8.1 (53 cases). With the 1911 scale there were 32 additional cases testing XI.8 or XI.9. The table indicates that 0.2% of the 15-year-olds tested below IX.8 with the 1908 scale, and 0.5% with the 1911 scale. This defines our scale borderline for the mature who are presumably deficient as below test-age X. These positions are near enough to the lowest 0.5%. The group testing of uncertain ability, age X, (strictly speaking between IX.8 and X.7 inclusive,) includes 0.7 to 0.9%. We thus approach fairly well the rounded age positions which exclude 1.0% above the lowest 0.5%. The total number testing in presumably and uncertain groups is thus 1.1%, 7 cases out of 653, for the 1908 scale and 1.2%, 8 cases, for the 1911 scale. This is to be compared with the percentage definition that the lowest 1.5% are either presumably deficient or uncertain.