78 



HAROLD C. BINGHAM 



In view of the fact that No. 27, in the secondary task, shows 

 learning superiority over chicks 24 and 25, these initial pref- 

 erence differences are suggestive. Some of the peculiar types 

 of native behavior manifested by these three chicks appear 

 in table 13. Reference to the table indicates a close similarity 

 between the behavior of chicks 24 and 25 which differs some- 



TABLE 11 



what from the behavior of No. 27. The average time of 

 escape for chicks 24 and 25 during these preliminary series 

 is respectively 8.0 and 8.6 seconds; for No. 27, it is 21.7 seconds 

 or two and one half times as great. Further similarities and 

 differences may be noted in the tendencies of chicks 24 and 25 

 to waver between choosing the right and left sides, and the 

 tendency of No. 27 to stick persistently, after the first two 

 tests, to left choices with only two variations appearing in tests 

 10 and 13. 



On the other hand, table 13 suggests close similarity among 

 all three chicks with reference to the stimuli. The letter 

 following the number of the test indicates the side on which 

 the + stimulus appeared. The columns headed "choices" 

 show which stimulus and which side was chosen in any test 

 by each individual. As three times is the greatest number of 

 successive 4- or — choices, it is quite evident that neither of 



