TRAINING IN WHITE RATS UPON VARIOUS SERIES OF MAZES 33 



coming to the maze — maze A. When the groups were 



ranked upon the various mazes, the groups with four and 



those with three previous learnings had the same average 



ranking, these having required the least total time per rat; 



and the groups with two and with one previous learning 



followed. In tables 27 and 28 are given respectively the 



average total time per rat and the rankings on this basis. 



The records of the different groups are shown graphically 



in figure 12. 



TABLE 27 



The Average Total Time per Rat by Groups Having Previously Learned 



One or More Mazes 



Maze A Maze B Maze C Maze D Maze E 



Group having learned one pre- 

 ceding maze 5.56 4.65 12.81 16.20 3.27 



Group having learned two pre- 

 ceding mazes 1.93 4.75 3.51 15.46 3.36 



Group having learned three pre- 

 ceding mazes 2.01 3.09 4.55 8.20 1.63 



Group having learned four pre- 

 ceding mazes 1.60 4.22 17.73 5.52 1.56 



TABLE 28 



The Rankings of the Groups upon the Mazes, According to the Average 



Total Time per Rat 



Maze A Maze B Maze G Maze D Maze E Av. Rank 



Group having learned 



/owr preceding mazes 1 2 3 3 1 2.0 



Group having learned 



//zree preceding mazes 2 1 1 4 2 2.0 



Group having learned 



two preceding mazes 3 4 2 2 3 2.8 



Group having learned 



one preceding maze .4 3 4 1 4 3.2 



The rankings according to the average errors per trial 

 and the average time per trial are given in tables 29 and 31. 



TABLE 29 



The Rankings of the Groups upon the Mazes, According to the Average 



Errors per Trial 



Maze A Maze B Maze C Maze D Maze E Av. Rank 

 Group having learned 



/owr preceding mazes 1 1 3 3 1 1.8 



Group having learned 



//zreg preceding mazes 2 3 1 2 2 2.0 



Group having learned 



two preceding mazes 3 4 2 1 3 2.6 



Group having learned 



one preceding maze .4 2 4 4 4 3.6 



