606 VITALITY AND EFFICIENCY WITH RESTRICTED DIET. 



those which represent the shortest time. The best averages for A are 

 for Bro, Tom, and Vea, with scores of 127, 122, and 132 seconds, 

 respectively. Men who required a conspicuously long time to perform 

 the test were Sye, Mon, and Pec, who have averages of 183, 168, and 

 167, respectively. Spe did not have so much opportunity for practice 

 as the others. Thus the test brings out the usual individual differ- 

 ences. It required 2 to 3 minutes, the average for all subjects being 

 147 seconds. Squad B, as shown in table 174, was definitely slower 

 in this test than A, both in the normal and the low-diet averages. 

 Several of the men have average scores of 200 seconds or longer. The 

 normal average is 194 seconds, the low-diet average 178 seconds. While 

 the average of 194 

 might be consid- 

 ered slow because 

 of the fewer prac- 

 tice occasions and 

 the longer inter- 

 vals which sepa- 

 rated them, this 

 condition does not 

 apply in the three 

 reduction dates, 

 January 13, 19, 

 and 27, which 

 were preceded by 

 ample opportun- 

 ity for practice. 



Fig. 114. — Average discriminatory reaction time for finding and 

 pointing to serial numbers. 



Solid line curve represents Squad A, and broken curve Squad B. 



It is therefore clear that the men of Squad B were slower in this test 

 than the subjects in Squad A. 



The averages for both squads on the different dates are compared in 

 figure 114. Squad B is definitely below Squad A; there is somewhat 



Table 173. — Sqtiad A — Reaction time for finding serial numbers. 

 [Values in seconds.] 



