For lines 10 cm. in length:
Average of seven subjects:
Note in general that
(1) l.f.e.c. mean error is most erratic, while the same curve is the most accurate, as far as constant errors are concerned;
(2) the left foot mean and constant errors are slightly greater than those for the right foot, for visual records;
(3) mean errors increase and constant errors reduce with speed-increase;
(4) the visual sense improves regularity, but does not reduce errors;
(5) there is a physiological reason for the shortening of lines at high speeds;
(6) the feet are more under control than the head, but less than the hands.