HABIT FORMATION IN ALBINO RATS 



37 



tion was, on the average, 44.945 seconds; of the eighth'genera- 

 tion, 13.825 seconds. All the seventh generation had relearned 

 at the end of the twenty-fourth day; but all the eighth genera- 

 tion had relearned at the end of the eighth day. The seventh 

 generation required, on the average, 8.00 days to relearn; the 

 eighth generation but 5.00 days. 



Vla.it Effi. 

 The Inclined Pi ane, 



Ittlrr.dStra.ia 



Mot mal Control 



Da< - lifted - Ho^tnat 



I J 1kl3:l3l 3.7 kl. If 3 

 3. ILIt.m 



i /**.y?7 



In these criteria of ability the seventh generation excelled in 

 learning, the eighth in absolute retention and relearning. But, 

 again, in absolute retention and relearning, we are dealing with 

 selected groups as the seven eighth generation and four seventh 

 generation rats that failed to learn were not used. There seems, 

 on the whole, to be but little difference between the abilities of 



