Influence of Work Posture due to Palm Rejection on Mental Workload caused by Handwriting

: This study aimed to evaluate the influence of the work posture due to palm rejection on the mental workload caused by handwriting using a stylus. We conducted an experiment, in which the work posture due to palm rejection and the screen tilt angle were evaluated using the input time and the NASA task load index. The results indicated that when the screen tilt angle was 0–30°, the mental workload could be reduced by enabling palm rejection; however, the input time was not affected. Moreover, after examining the influence of the screen tilt angle, we concluded that tilting the screen by 20–30° would be most preferable, regardless of whether palm rejection occurred or not.