Abstract
For seven kinds of targets, nine stimuli with regular intervals of asymmetry were made for each target. Attractiveness of those stimuli was evaluated by participants. More attractive in a pair of stimuli was chosen and it was rated in a three-point scale or as equal. These results showed that the attractiveness was decreased according to the degree of asymmetry; no abrupt change was observed. This result suggests the categorical judgment is not used for the evaluation of attractiveness within a range of fluctuating asymmetry.