250 The Dancing Mouse 



of the method in terms of the number of series, and the lower 

 its efficiency in terms of the total number of tests. By taking 

 into account these facts, together with the fact of fatigue, 

 we are led to the conclusion that ten tests per day is the most 

 satisfactory number. 



If my time and attention had not been fully occupied with 

 other problems, I should have determined the efficiency of 

 various methods of training in terms of the duration of habit, 

 as well as in terms of the rapidity of its formation. As these 

 two measures of efficiency might give contradictory results, 

 it is obvious that a training method cannot be fairly evaluated 

 without consideration of both the rapidity of habit formation 

 and the permanency of the habit. A priori it seems not im- 

 probable that slowness of learning should be directly cor- 

 related with a high degree of permanency. By the further 

 application of the method which I have used in this study 

 of the efficiency of training we may hope to get a definite 

 answer to this and many other questions concerning the 

 nature of the educative process and the conditions which 

 influence it. 



