The Duration of Habits 263 



for most individuals, would be more easily learned if the train- 

 ing in it were preceded by training in labyrinth B. 



The results are sufficiently definite to warrant the conclu- 

 sion that experience in B rendered the learning of C easier 

 than it would have been had there been no previous labyrinth 

 training. Those individuals whose first labyrinth training 

 was in C made their first correct trip as the result of 19.7 

 trials, whereas those which had previously been trained in 

 labyrinth B were able to make a correct trip as the result of 

 only 7.0 trials. Similarly the table shows that training in 

 C rendered the subsequent learning of B easier. To master 

 B when it was the first labyrinth required 8.2 trials ; to master 

 it after C had been learned required only 5 trials. In addi- 

 tion to proving that the acquisition of one form of labyrinth 

 habit may facilitate the acquisition of others, comparison of 

 the averages of Table 51 furnishes evidence of the truth of 

 the statement that no results of training can be properly 

 interpreted in the absence of knowledge of the previous 

 experience of the organism. 



