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MEMOIRS NATIONAL ACADEMY OF SCIENCES. 



Weighting key for tests of examination a — Continued. 



[Vol. XV, 



It will be observed that the use of weighting keys has the effect of weighting the tests as 

 follows (named in order from test 1 to test 10): 3, 2, 2, 3, 2, 1, 3, 2, 1, 1. These weights were 

 recommended by Thorndike on the following grounds: (1) The combined opinions of a dozen 

 psychologists as to the relative weight to be attached to the tests; (2) a rough estimate of the 

 variabilities of the tests; and (3) a rough estimate of their inter-correlations. At that time 

 no data on correlations with officers' ratings were available. By the method of scoring and 

 weighting used, the total score ranged from +226 to — 188. 



The distributions of scores for various groups are shown in table 1. 



