58 WALTER S. HUNTER 



I sec. to T,T, mins. Fourteen trials involved intervals of lo 

 mins. or over. A total of 15 trials was given with intervals of 

 4, 5 and 6 mins. in length. In the 47 trials, 10 errors were made. 

 Two of these came in each of the delays of 4, 5 and 6 mins. One 

 came at 11 mins.; i at 12 mins.; and 2 at 20 mins. Hd, there- 

 fore, had no trouble in remembering the solution of the problem 

 until the intervals of delay reached 4 to 6 mins. Then the 

 difficulties that arose were mastered and did not reappear until 

 the periods 11 to 12 mins. and 20 mins. were reached. 



Hd did not need to keep any part of his body constant dur- 

 ing delay. He and the experimenter exchanged stories con- 

 tinually. This subject differed from M in the number of errors 

 and in the greater frequency with which information was offered. 

 The former I attribute to difference in ability; the latter, to 

 natural garrulousness. The restraint during delay was a great 

 source of annoyance to Hd. He complained a great deal be- 

 cause of it. My diary notes contain many such passages as the 

 following : When light was turned off, he said : " Why hold 

 me so long, I may forget which it is." The subject evidently 

 realized that he was to remember where the light had been. 

 Many times during the delay, Hd would stop conversing and 

 say "0,'I know which one it is" and would then point — not 

 always correctly — to the button he had in mind. Instances of 

 wavering and hesitations preceding acts of choice were noticed 

 with this subject. 



L, age 6 years, was given 41 trials on delay. Only one of 

 these involved an interval less than i sec. long. The remainder 

 were from i sec. to 25 mins. in length. Twenty-one trials were 

 on delays from 4 to 9 mins. long. Nine were oh delays over 

 10 mins. in length. Seven errors were made in the total 41 

 trials. All of these came in delays of 4 mins. or over. Two 

 were at 4 mins. and one each at the following intervals: 5, 7, 

 8, 15, 17 and 25 mins. L, as Hd, found most difficulty in the 

 period around 5 mins. 



L did not find it necessary to keep either his body or the 

 direction of his attention constant in order to solve the problem. 

 He, too, conversed freely with the experimenter during delays. 

 L would often watch for the light out of the corner of his eyes. 

 After it appeared, he would apparently pay no further atten- 

 tion to the problem until released. L was less demonstrat ve 



