Further Data on the Stanford-Binet VIII- and IX-Year Tests

The discussions of Madden and Stoke 1 recall similar statistical studies by tlie writer of the responses to the individual tests in the Binet scale. These studies include an analysis in 1911 of successful responses to the tests in the 1908 scale, based on the performance of 333 epileptics;2 a tabulation in 1916 of the percentage of successes for each test in the 1908 scale based on the responses of 1,000 consecutive clinic cases when the responses were classified (a) according to Binet age irrespective of chronological age and brightness classification, and (&) according to brightness classification irrespective of Binet age or chronological age;3 and a detailed analysis from 1926 to 1928 of successes on the tests in the Stanford-Binet scale. The results of the Stanford-Binet analyses have been published only for the VIIIand IX-year tests, based on 1,382 consecutive clinic cases, of whom over one-fourth were classi-