Bauhaus-Universität Weimar

G. W. FITZ. 
the everyday, haphazard activity, demanding as it does a 
certain degree of accuracy in the execution of movements, 
determines for each individual his range of error, and that 
time is the main element of variation. 
It will be noted that though the time of the females is 
longer than that of the males, there is a compensatory in¬ 
crease in accuracy. The relation between time and accuracy 
has not been determined, so it is not possible to make a state¬ 
ment of the value of accuracy in terms of time, but un¬ 
doubtedly the individual, who is fairly accurate and very 
quick, is more accurate when he takes more time, yet it is 
also true that he is sometimes much more accurate than at 
others without being necessarily either quicker or slower. 
These individual variations have still to be studied. The 
main point to be emphasized now is, that between two per¬ 
sons it is practically possible to bring one element of the test, 
either time or accuracy, to equality, so that the difference 
may be expressed numerically in terms of the other. Just 
what value this series of tests has can not be stated posi¬ 
tively, but we believe it has distinct reference to motor abil¬ 
ity, and that this will be shown by an increased number of 
observations upon individuals whose powers are definitely 
known by comparison with others in the various games. 
I wish to acknowledge special indebtedness to Prof. Joseph 
Jastrow, Mr. G. W. Morehouse, Dr. F. B. Jewett and Mr. 
A. W. Jeardeau for assistance in getting observations.


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