Haggerty, Imitation in Monkeys. 425 



General Summary of tJie llesuUs of the Butio7i Experiment. 



Taken as a whole the Button Experiment gives three cases of 

 imitation, no one of them immediately successful in detail. In the 

 cases of ISTo. 4, No. 5 and No. 3, there was an immediate modification 

 of behavior, but in no case was there an exact repetition of the 

 behavior of the performing animal. It did not require many repeti- 

 tions of the act, however, for each animal to learn to perform the 

 act perfectly, 



TABLE 32. 



Results of the Button Experiment. 



I. 



Numlier of animals used in imitation tests 4 



Cases of successful imitation 3 



Cases of partially successful imitation 



Cases of failure to imitate >. 1 



II. 



Cases of imitation wiien the imitator was confined during the activity of 



the imitatee 



Cases of imitation when the two animals were together in the cage 3 



III. 



Cases of immediate imitation 



Cases of gradual imitation 3 



IV. 



Cases of imitation in whicli the imitating animal did not himself experi- 

 ence the result of the act before performing it 3 



Cases of imitation in whicli the imitating animal did experience the result 

 of the act before performing it 



8. String Experiment. 



A. Description of Device. 

 From the top of the experiment cage (fig. 11) strings 1. 5, 6. and 7 were 

 dropped downward along each of the corner posts to within IS cm. of the 

 floor of the cage. Along the back of the cage and 15 cm. apart were sus- 

 pended three other strings, 2, 3, and 4, in like manner. To the lower end 

 of each -string was fastened a small knob, A'. In the following observations 

 on the behavior of the animals 2t indicates the second string at the place 

 where it enters the cage, and 21c indicates the knob attached to the end of 

 the second string. 



