In the following table is noted the time and accuracy of 

 the guinea pig's forming the antagonistic habit of making the 

 left turn. Only his reactions in leaving the maze are noted, 

 his entering being disregarded. Fractions are omitted, the 

 next higher whole number being used. 



Series No. Trials Av. Time A. D. % of Errors 



1 6 113 165 50 



2 11 11 14 9 



3 4310 



4 17 2 1 



After an interval of forty-eight hours the conditions of 

 the first part of the experiment were resumed, namely, the 

 left door was locked and the right door was left open. The 

 results are shown in the following table. 



Series No. Trials Av. Time A. D. % of Errors 



1 15 11 7 41 



2 7520 



After an interval of six hours, the conditions were again 

 reversed. In the following table are shown the confusion 

 effects. 



Series No. Trials Av. Time A. D. % of Errors 



1 15 22 19 67 



2 25 9 4 40 



3 11 8 3 37 



The Guinea pig seemed to compensate for his inability 

 to form the left turn habit, as previously, by his greater 

 quickness in making a practical trial of both doorways. He 

 learned that if one door was locked the other was open and 

 he substituted a method of trial and error for the docility of 

 the former experiments. Further, he acquired a negative 

 reaction to the sight of the locked door, which he remembered 

 was locked often without trying it, that took the place of the 

 lacking positive reaction to the unlocked. The general con- 

 clusion from the above results is that frequent alternation 

 of the opposite conditions reduces the adaptability of the 

 Guinea pig for either of the these conditions when it is 

 afterwards maintained constantly. This last method of re- 

 action of the Guinea pig's was well suited for the experi- 

 ments in Movement-odor Association described in the fol- 

 lowing section. 



[SIXTEEN 



