274 



ARTHUR C. WALTON 



such a smooth curve. A short summary of the data may make 

 this growth more apparent. 



"Five Seconds Light — Ten Seconds 



1/22/14 25 trials 8 correct 27% 



1/24/14' 60 trials 57 correct 45% 



1/27/14 25 trials 17 correct 68% 



1/28/14 21 trials 11 correct 52% 



2/ 6/14 

 2/10/14 



18 trials 

 15 trials 



16 correct 88% 

 11 correct 73% 



Delay." 



Falling off on 

 Falling off on No. 3 

 Last nine correct, t. 

 Refused to act seven of 



last eight trials. 

 Last twelve correct. 

 Trials five to eleven correct. 



That the low records at the beginning of the experiment were 

 not due to the breaking down of orientation cues, is seen by 

 comparison of the records for trials of "Ten Seconds Delay" 

 condition "A2" given at the same time. 



On January 17th, 1914 a series of thirty "A2" trials showed 

 only 33-1/3% or "Chance" percentage of trials correctly com- 

 pleted. Of the "C" trials, a series of twenty-five on January 

 22nd, 1914 showed only six or 27% of them as correct factions. 

 This shows that the lack of attention to the stimulus -vas th 

 cause of the failures and that attention and training .ost be 

 gained before higher results could be obtained, as the- results 

 show there was a parallel rise of the learning curve in the problem 

 given in both the "A" and "C" conditions. The added train- 

 ing and the better attention given to the stimulus ga> * d a 

 practical mastery of the problem at the same relative time, l. e. 

 February 5th, 1914 for trials of Condition "A2" and Febrr'Ary 

 6th, 1914 for trial of Condition "C2." The daily recorV of 

 January 27th, 1914 showed very nicely the typical day's work 

 with an advancement coming at the end of the series of trials. 

 Many of the daily records showed a higher average of results 

 for a single series, but this example is given because it shows 

 the growth from a very low beginning to a high ending. 



Stimulus 

 at Com- 

 partment 3332111233213333321322123 25 Trials 



Response 

 at Com- 

 partment 1232021223312002321322123 



Correct 



x x 



X X 



X X X X 



XXXXXXXXX 



Failures mostly 

 on No. 3 Com- 

 partment 



17 Correct — 

 68% 



