354 journal of Comparative Neurology and Psychology. 



facts of behavior, be a pleasant pastime, but it can add nothing to 

 a solution of our problem. 



In describing the behavior of the animals and in interpreting 

 that behavior, it has been my aim to use all terms in as objective 

 a way as possible. Certain words with a subjective implication 

 are, however, so indispensable for convenience that I have ventured 

 to use them, and to define them objectively to avoid misunderstand- 

 ing. 



The verb see was needed so often that to have found a roundabout 

 substitute with a wholly objective signification, would have need- 

 lessly encumbered the account with words. When an animal's eyes 

 were directed toward a thing, when he turned his head or fixed his 

 gaze apparently in response to the movement of another animal, 

 when he reacted toward an ol)ject by going toward it or away from 

 it, I have chosen to say that the animal "saw" the thing to which 

 he aj^parently responded. In case there was an accentuation of such 

 behavior, an a])])arent increase of muscle tension and eagerness to 

 make such movements, I have said the aninuil "saw irell" or "saw 

 perfecUy." I have said he saw "fairly weU," if the objective marks 

 of attention were present, but not normally strong. In none of 

 these cases, however, do I intend to imply more than that the aniimd 

 manifested such behavior. 



So, also with the word experience. When an animal ate the food 

 which was obtained by the manipulation of a device I have said he 

 experienced the result of the act, but throughout the presentation 

 of data iind the interpretation thereof, I have meant nothing more 

 than that he ate the food so obtained. I have intended to imply 

 nothing as to the psychic aspect of such behavior. 



The same is true of my use of the word imitation which I shall 

 define in the general summary of Chute Experiments A and ]>, 

 page 376. 



It has been convenient to use a few common terms with technical 

 meaning. To denote the several times an animal was in the cage 

 alone before he was given an opportunity to learn by imitation, I 

 have used the word trial. I have used the word test to mean the 

 opportunity an .animal had to learn from another animal. The word 



