122 



NENOZO UTSURIKAWA 



number of trials, and the number of trials in which no response 

 appeared. The chief results of these measurements of reaction 

 time may be stated thus: 



TABLE 4 



Quickness of Response to Auditory Stimulus 

 Outbred 



Average reaction time for the first and second trials = .40" 



Total number of failures to respond in the first and second trials = 52 



Average reaction time for the first and second trials = .39" 



Total number of failures to respond in the first and second trials = 39 



* Excluded from the averages, as the accuracy of measurements was uncertain. 



