THE FORMATION OF HABITS AT HIGH SPEED 



175 



FIRST HALF RECORD SECOND HALF RECORD 



Averages Averages 



Seconds Seconds 



Animal A 4.58 1 .80 



Animal B 8 . 56 4 . 75 



Animal C 13.75 4.80 



Animal D 6.43 4.54 



General average 8.33 General average 3.94 



Here, too, is evidence that the behavior was modified by the 

 "tank experience," but much more interesting is the fact that the 

 changes undergone seem to harmonize very closely with the 

 results secured by Watson ('03) under much more favorable 

 conditions. The increase in the speed of the young animals was 



Characterization, Animal C: Animal between tliree and four weeks old; very 

 quick and nervous. In first trial explored all corners, became panic-stricken in 

 the second, better in the third, but during the fourth lost much time clawing the 

 wire screen. In the last half of the series the animal seemed to have found itself, 

 and exhibited no semblance of fear. The length of the twelfth trial is due to having 

 overshot the opening. Averages: first six trials, 13.75"; second six trials, 4.8". 

 Improvement, 64.4 per cent. 



Characterization, Animal D: Animal between three and four weeks old. Rela- 

 tively slow and indifferent. Averages: first six trials, 6.43"; second six trials, 

 4.57". Improvement, 29.9 per cent. 



