Haggerty, Imitation in Monkeys. 385 



definite the imitative behavior. She repeatedly tried to do what she had 

 seen done and finally succeeded. At no time, until she performed the act 

 herself, did she experience the result of the act, the stimulus-complex 

 being the other animal performing an act and getting food. 



D. Behavior of No. 6. 



Preliminary trials. First trial. No. 6 v^^as very active climbing all about 

 the wire and running about on the floor. He caught the rope in his hands 

 and later in his tail. He climbed the rope and in attempting to jump from 

 the rope to the front of the cage he put his foot against the food door and 

 the door opened. He did not notice it, however, and it was closed before 

 he saw what he had done. He climbed the rope several times after and took 

 no notice of the door. 



Second trial. On the second day No. 6 was very active on the wire and 

 the rope, but took no notice of the door. 



Third trial. On the third day No. 6 behaved as usual, climbing about 

 the wire. He took no notice of the rope. 



Fourth trial. On the fourth day No. 6 climbed the wire several times, 

 each time carrying the rope up in his tail. Later he climbed the rope, 

 swung back and forth on it, and after two or three oscillations he leaped 

 to the wire front. He took no notice of the food door. 



Fifth trial. On the fifth day he grasped the rope and ran in a circle 

 on the floor. Then he swung on the end of the rope twice. Then he 

 grasped the rope in his tail three feet from the floor and allowed his body 

 to swing. He dropped to the floor and caught flies. He climbed the rope 

 and examined the cracks in the top of the cage. During his entire time in 

 the cage he took no notice of the food door. 



Imitation tests. — No. 6 imitating No. 2. — No. 6 was put into the observa- 

 tion-box and the box was put on the floor of the cage. 



Performance 1. No. 2 spent the first few minutes on the floor of the 

 cage, on the box, and in climbing the wire. He climbed the rope, but came 

 down without any attention to the food door. No. 6 saw No. 2 on the rope. 



No. 2 again climbed the rope and worked at the door slightly, but did 

 not open it. No. 6 saw all the movements of No. 2. No. 2 then became 

 frightened at No. 6 and did not work. 



P. 2. No. 6 saw No. 2 with the food, but nothing more. 



P. 3. No. 2 now became angry and pretended to fight, hanging over the box 

 by his tail and shrieking loudly. No. 6 on the inside of the box jumped 

 and threatened. No. 2 retreated to the corner by the rope and shrieked. 

 Suddenly No. 6 stopped jumping, put his head on one side and purred. No. 

 2 had done this just before and now repeated it. His fear was gone; he 

 shot up the rope, opened tlie door and got food. As No. 2 climbed the 

 rope No. 6 looked out through the wire, and when he turned again toward 

 No. 2 the latter was eating his banana. At once No. 6 began to jump up 

 and down in his box to show his anger. No. 2 was again frightened and 

 for several minutes the shrieking was renewed. 



