40 G. V. HAMILTON 



cussion she manifested only 3 recency first choices, but after 

 these trials, during which the operation of the factor of recency 

 was invariably advantageous she manifested 100% of recency 

 first choices. 



3. During the 100 formal trials this subject entered alley 

 No. 3 less frequently than she entered either alley No. 1 Or 

 No. 2. During her 20 habit forming trials both alley No. 2 

 and alley No. 4 were entered more frequently than was alley 

 No. 3, hence the factor of frequency, as such, cannot be held to 

 account for the formation of the habit. 



These findings suggest that frequency of an advantageous re- 

 sponse is a more important determinant of habit formation than 

 is frequency of a response which carries with it no invariable 

 advantage. This point will be given further discussion in the 

 presentation of the records that follow: 



White Rat 2 



This subject displayed 11 pure recency and 7 recency-fre- 

 quency reactions during his 100 formal trials. The record of 

 his first choices is as follows: alley No. 1 was the first choice 

 in 9 trials, alley No. 2 in 24 trials, alley No. 3 in 33 trials, alley 

 No. 4 in 34 trials. During his 100 formal trials he entered 

 alley No. 1 72 times, alley No. 2 124 times, alley No. 3 124 

 times and alley No. 4 74 times. Table 11 gives the record of 

 the 14 trials that it was necessary to give him before he ceased 

 to try other alleys than right alley No. 1 : 



Alleys Entered by White Rat 2 During Each of 14 Habit-Forming Trials 



