ESTIMATION AND TESTING OF FINER GRADATIONS 141 



This conclusion sounds extremely optimistic in- 

 deed, since the material that Burt had at his disposal, 

 43 subjects, does not in the slightest degree suffice 

 for the formulation of such a thesis. However, the 

 principle that it embodies is so promising and so il- 

 luminating as imperatively to demand a thorough re- 

 testing by the most exact methods and on a very ex- 

 tensive scale. 



An analogous result has been found also with 

 feeble-minded children. Mile. Descoeudres (73) 

 tested 14 children in an institution by means of 15 

 different tests. It is true that the children differed 

 very greatly in age (from 6.5 to 14 years), yet it was 

 possible to estimate their intelligence by the general 

 impression that they made in the house and in the 



TABLE XX 

 DESCOEUDRES : EXPERIMENTS ON FEEBLE-MINDED CHILDREN 



r-Correlat'ns with Est.Intell.-^ 



of all 



of each of each the tests 

 5 tests . combined 



Tests test 



1. Comparison of terms 0.878 



2. Computation 0.868 



3. Describing pictures 0.842 



4. Problem-questions 0.817 



5. Tactual discrimination 0.812 



6. Definitions 0.801 



7. Stringing beads 0.780 



8. Inventiveness (a picture is 



shown : what are the persons 



in it talking about?) 0.761 



9. 'Patience' (restoring a cut-up 



picture) 0.734 



10. Knowing four coins 0.699 



11. Attention (cancelling a's) 0.671 



12. Visual memory (5 objects) 0.646 



13. Noting omissions in drawings. 0.637 



14. Auditory memory (5 words) . . 0.539 



15. Naming 60 words in 3 min 0.509 



0.91 



. 0.84 



0.73 



0.99 



