21 



THE QUARTERLY REVIEW OF BIOLOGY 



TABLE i— Continued 



52.. That is all (or you can run and play now) (signal to quit work) 

 53. Do that once more (repeats act just done) 



TYPE II — SPECIFIC ORIENTATION TO OBJECT OR POSITION REQUIRED 



i. I have lost my gloves (or other object) (searches and finds object) 

 z. Go and get my gloves (or other object in room) 



3. Go in the other room and get my gloves (or other object) 



4. Go and find my keys 



5. Come over to Herbert 



6. Come and let me take your collar off (goes and holds out head) 



7. Go and find professor (or other acquaintance) 



8. Go and look out of the window 



9. Now go to the other window 



10. Go and put your head on the chair (table, or other object) 



11. Go and jump up on the table (chair, or other appropriate object) 

 iz. Go to the front (or back) door 



13. Go and put the dollar (or other object in mouth) on the table 



14. Go and find the cook 



15. Come over to me and let me brush you (goes and takes proper attitude) 



word-object association had previously 

 been formed sufficiently strong to carry 

 over the interval and lead to a recognition 

 of the object when the latter came finally 

 within the field of vision. The work of 

 Hunter (18) Walton (54) and others on 

 the delayed reaction experiment, which is 

 relatively simple compared to the present 

 test, should have served as a warning 

 against expecting favorable results in this 

 case. We know of no instance in which 

 even the higher apes have actually dem- 

 onstrated their ability to pass such a test 

 when all visual cues have been ruled out; 

 and of course Fellow could perform even 

 the type II commands when his master 

 was not behind the screen. 



Without further tests we are unwilling 

 to say that the dog cannot come up to the 

 type II level of response, since the ar- 

 rangement of hiding the master behind 

 the screen was new and perhaps disturbing 

 to Fellow. This may have been due, not 

 altogether to lack of visual cues, but 

 perhaps also to the fact that the dog was, 

 under this condition, removed from his 

 usual position for performing, i.e., on the 



stage in front of his master. Some evi- 

 dence for disturbance arising from this 

 and other conditions imposed by the test 

 can be gathered from a close study of the 

 detailed records. 



October 30, 2:00 P.M. (all three -persons 

 present behind screens'). The following 

 commands (type II) were given along 

 with many of the simpler sort (type I), 

 all of the latter being correct : 



1. "Jump upon the table" — Correct. 

 x. "Put your head on the chair"- — dog jumps up 

 on table again. 



3. Command repeated twice — dog hesitates, 



looks toward screen, goes over to the 

 window and looks out. 



4. "Go over to the door" — dog leaves window 



and stands near screen. 



5. "Go look out of the window" — dog jumps up 



on table near by. 



6. "Put your head on the table" — dog looks at 



and approaches screen. 



It was now decided to make a deliberate 

 attempt to confuse the dog, by having 

 Mr. Herbert come from behind the screen 

 and issue the commands, at the same time 

 looking away from the place or object 



