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THE WHITE RAT AND THE MAZE PROBLEM 145 



3. Comparative Accuracy 



As the table shows, in the first trial, these animals in the 

 olfactory maze averaged only 4.5 errors as compared with 14.7 

 made in the normal maze. Thus the initial accuracy was three 

 times as great. The final accuracy was greater also. The 

 olfactory maze shows .04 average errors per trial for the last 

 five trials while the normal maze has an average error of .1 per 

 trial for the same five runs. The total number of errors per 

 animal in the olfactory maze is only one-third that of the animals 



5" (0 iS 30 3,5 io 



Figure 1. Time and error curves for Experiment I. Olfactory trail in the true 

 path. Full line time, dotted line errors. 



in the normal maze. The error curve, seen in Fig. 1, bears out 

 all of the above statements. Its chief features are the low begin- 

 ning height, and hence slight fall, and the almost complete low 

 level which it maintains after the twelfth trial. A comparison 

 of the error curve of the normal maze with this will emphasize 

 these facts better than words. 



4. Speed 



The time per run for the early trials was less than in the normal 



maze as may be seen from the table but this was entirely owing 



to the fact that there were so few errors. The actual speed was 



much slower. In the first trial they averaged only 4.5 errors per 



