The change of evaluation of floor slipperiness resulted from the change of gait with aging was investigated in this paper. At first, we developped an outfitting equipment for the young to simulate geriatric gait. Secondly, the sensory test was carried out using young panels with and without the equipment. The psychological scale of evaluation relating to slipperiness of sample floors employed for the test was constructed. Then, C. S. R which was the physical value corresponding to slipperiness was measured using "O-Y Pull Slip Meter". Thirdly, based on the correlation between the psychological scale and C. S. R, the difference of the aged from the young in evaluating slipperiness was investigated.
