REDINTEGRATION IN ALBINO RAT— A STUDY IN RETENTION 45 



(IV-A, IV-C, and V-C) contain the records of rats at 

 the 45-day retention period, and also at the 30-day reten- 

 tion period, hence afford a norm both of learning and 



" Error " Totals From Table IV-A 



45-Day Period. 1 Trial per Day 



From 15th Trial of Learning; Complete Redintegration 



*A11 individuals of this group learned the inclined plane first. After this problem 

 a 70-day period was allowed to elapse, when the maze was begun. During the 

 70-day period each rat was required to learn one or more new problems, the rope 

 ladder being first, the sawdust box second. During the 45-day period after the 

 learning of the maze, the rats were exercised in the runway, as outlined in the chapter 

 on methods. 



TABLE Vlll-B 



45-Day Period. 1 Trial per Day 



With Previous Problems 



Time in Seconds 



Averages — 

 Trials.. L... 43.1 

 R. 17.8 



Averages — 

 Trials.. L. 75.7 

 R.26.2 



Av. * Trials.. L. 14.2 

 R. 13.4 



Av. Time per Trial . .L. 8. 14 

 R.8.81 



From Table IV-C 

 45-Day Period. 1 Trial per Day 



Av. * Trials.. L. 10.5 

 R.(9.55 



Av. Time per Trial , 



.L. 9.02 

 R. 14.42 



