230 



The Dancing Mouse 



males and for five females which were trained by being given 

 ten tests per day, and similarly for the same number of in- 

 dividuals of each sex, trained by being given twenty tests 

 per day. Since the results for these two conditions of training 

 are very similar, the averages for the twenty individuals are 

 presented in the last column of the table. For the present 

 we may neglect the interesting individual, sex, and age differ- 



TABLE 41 



WHITE BLACK DISCRIMINATION TESTS. NUMBER OF ERRORS IN 

 THE VARIOUS SERIES 



