On the basis of the Wechsler Intelligence Scale, the Stanford Binet Vocabulary Subtest and the Bender-Gestalt Test, Dr. William Hawkins determined that he functioned at the dull normal level in the verbal area but in the borderline mental retardate area in the performance area.
During World War I he worked with the United States Army to develop psychological tests to screen new draftees while studying under Charles Spearman and Karl Pearson.
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