Abstract
Survey by mail was made on 31 items concerning the laterality of the arm and the leg in 1500 university students. Computer analysis according to the theory of quantification developed by Dr. C. Hayashi was made on the selected 20 items. Work ability of the arm and the leg was measured separatory for right and left side in volunteers of university personnel.
From these results problems on laterality were elucidated on the following points:
1) Frequency in use of right and left extremities and related problems
2) Standard criteria for right and left handedness
3) Correlation between the laterality of the arm and the leg
4) Relationship between kinds of work and frequency in use of right and left extremities
5) Check points for designing the layout of apparatus in relation to laterality
