In 1934-1935 a group of eighteen persons whose high IQ's had been measured tweleve or thirteen years earlier (at ages 7 to 9 years) were measured in these respects and to these were added three others whose childhood IQ's were known to have been over 170. The tests used, to be reported here, were: CAVD Intelligence Scale, Levels N-Q; the Coöperative General Culture Test (Form 1933 or 1934); and the Coöperative General Science Test (Form 1933). There were also available data on most of the individuals from Army Alpha tests taken at ages 16 to 19. Of the 21 cases thus studied, nine had a childhood IQ over 170; eight over 150 [to 170]; the remaining four ranged down to 133. ADULT STATUS OF HIGHLY INTELLIGENT CHILDREN [1] The detailed data have been reported elsewhere and only the general results need to be recited here. "For these gifted individuals (albeit there are so few studied) superior status on the Stanford-Binet at or near ages 7 to 9 years of age is highly predictive of status on Army Alpha at or near 16 to 19 years of age, and of status on CAVD at or near maturity. . . . "It is clear that CAVD is more closely associated with General Culture than with General Science. . . . There obviously is a specificity of success for Science as compared with general Culture. . . . "The results for the CAVD as interpreted through norms obtained on selected populations show that highly intelligent children (of IQ 140 or above) fall within the upper quartile of the college graduate population of the United States, when they are at or near maturity." Such results are confirmed also by a study reported two years earlier, in which over 100 children had been re-measured with Army Alpha 10 to 12 years after their initial Stanford-Binet measurements at ages 7 to 9 years. [2] All these children had IQ's over 130, and half of them were over 150, ranging up to 190. From this study the following conclusions had been drawn: "Of 116 children testing in the top centile of the distribution of school children by Stanford-Binet, 82 per cent were found when near maturity, ten years later, to rate in the top centile of the military draft by Army Alpha. The remainder rated in high centiles. No individual of either sex regressed to or nearly to the average. . . . Girls regressed from the top centile somewhat more frequently than boys, this regression being in part but not fully accounted for by the known sex difference between medians on Army Alpha. "This result affords a validation, by means of elapsed time, of the predictive power of available mental tests on the one hand; and on the other, a proof of the constancy of the intellectual development of gifted children in terms of centile status." CRITIQUE OF THE CONCEPT OF "GENIUS" AS APPLIED IN TERMS OF IQ