STIMULI DURING DELAYED REACTION IN DOGS 



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The above summary shows that the associations toward the 

 different compartments varied considerably. Any two of the 

 compartments would have perfect associations while the other 

 would be neglected. The next day the result would be vice- 

 versa, and the neglected one would become the compartment 

 best associated. Thus, while one day's record would show more 

 trials at one compartment than at another, the whole series 

 of trials showed about *an equal number of trials on each one. 

 This variation might be construed as an argument against the 

 possession of reason by the dog. If the light always meant 

 the compartment that contained the food in the three light 

 trial, why did not the dog go to the light when it was placed 

 over a fourth compartment ? This presupposes that the dog 

 had mastered the association between the light and reaction 

 necessary to obtain the food and gave good results in the three 

 light experiments. The fact is that he did not, of his own accord, 

 make the new association. Evidently if reason was working 

 here as a factor in association, seeing the light anywhere over 

 a dish would cause a motor impulse to go to it. But, as it 



