General intelligence tests of D show the following results:
DATE BIRTHDAY STANFORD- ARMY ALPHA THORNDIKE TEST
AGE BINET POINTS FOR FRESHMEN
OF D (POINTS)
MA IQ D Norm D Norm
Aug., 1917, 7-4 13-7 184
Jan. 29, 1921 10-11 Passed all 185 —
for Super. (Form 5)
June, 1922 12-3 Adult. 106 70-80
It is thus seen how greatly D suprasses the average child in mental tests. In the five years which have elapsed since D's first test there has been no tendencey to become mediocre. At the age of 7 years he showed an IQ of 184; at the age of 11 years he exceeded by a wide margin on Army Alpha the median score for postgraduate students in first-rate universities; at 12 years he far exceeded the median score of college freshmen on Thorndike's test for that group. The validity of these scores is consistently borne out by the school history.
PHYSICAL MEASUREMENTS
The following measurements, as of May, 1922, were made in the gymnasium of the high school attended by D: [3]
WEIGHT (LBS.) HEIGHT (IN.) HT.-WT. COEFF.
D NORM D NORM D NORM
76.0 82.8 64.0 57.7 1.19 1.44
D's health has always been excellent and no physical defects are known to his parents. He is rated as very stable nervously. His slenderness has been rated as a defect by one examiner; although he greatly exceeds the norm in height, he falls below in weight. He is therefore very tall and slender in appearance, which is characteristic of his father and uncles.
MISCELLANEOUS CHARACTERISTICS
Diversions. At the age of 7 years D's favorite amusements were skating, "Mechano," reading, playing ball, writing, tabulating, solitaire, chess, and numerical calculation in all its forms. As development has proceeded, he has continued most of these recreations, turning more and more, however, to games of intellectual skill. He likes other children and likes to be with them; he has established relations with them by editing newspapers for them, teaching them about nature, and the like. Play in the sense of mere purposeless sensorimotor activity has not been enjoyed by him.