14 G. V. HAMILTON 



The limitations of my method render it impossible to dis- 

 tinguish clearly in all cases between this " persistent avoidance " 

 reaction-type and the reaction described above as Type E. 

 Since the two reaction-types have a single general characteristic 

 I have classified them together in the tables as Type E reac- 

 tions. At times a subject will start to enter an alley, obviously 

 inhibit the impulse to do so, and pass on to other alleys, which 

 are entered without hesitation. If the " inhibited " alley hap- 

 pens to be the right one for that trial persistence of this inhibi- 

 tion may lead to the entrance into the other alleys many times, 

 and with constant variation of choice among them. I have 

 usually found that such episodes are characteristically manifested 

 under conditions which contain adventitious stimuli that are 

 conducive to either excitement or distraction, or both. 



In most cases where a subject tries other alleys than the right 

 one during a given trial many times one cannot be sure whether 

 the subject is manifesting (1) a persistent inhibition of an 

 originally positive impulse to enter a given alley or (2) merely 

 a persistent positive impulse to enter a given alley or alleys, 

 so that one alley appears to be avoided when it is not actually 

 an " inhibited " alley. 



II 



Reaction-type Tables. — In table 2, which directly follows, the 

 number of each type of reaction that was manifested by the 

 individual subject is indicated both by a horizontal line of 

 dashes and a numeral at the end of the line. Thus the letters 

 " A," " B," " C," " D " and " E " appear after Girl I's place 

 in the table, and in Hne with "A" are 17 dashes, followed by the 

 numeral 17. This is meant to indicate that this subject mani- 

 fested 17 Type A reactions during her 100 formal trials. The 

 reactions obtained during the preliminary trials do not appear 

 in this table. 



TABLE 2 



Subject Age Number of each Reaction-Type 



Girl 1 3 years... A. 17 



B. 3 



C. 4 



D. 11 



E. 6 



