Abstract
Experiments of straight-line cutting with scissors and shears were made on elementary school pupils and female adults. Using a polygraph as an instrument, respiration curve and the E. M. G. of forearm and hand muscles were recorded to examine the correlation between the evaluation of these graphs and that of the cutting results.
The results were as follows :
1. A characteristic pattern was observed in the respiration curve of the “experienced.”
2. Distinct antagonism was observed in the E.M.G. of the “experienced.” In this case the degree of discharge was also low.
3. As far as the very “skillful” and “unskillful” were concerned, there was a correspondence between the evaluation of the graphs and that of their works.
