Abstract
This paper discusses the relative rating method to check order relations onomatopoeias expressing pains. There already has been "Pair test", which is a frequently used relative rating method. Its precision is high, yet a burden on subjects is heavy. Therefore we suggested the new relative rating method that has light burden and named this method "Sorting test". Up to the present, many kinds of sorting algorithms have been invented. The Sorting test used "Quick sort", which is said to take the shortest time to sort among the sorting algorithms. So that, the Sorting test evaluates at a small comparison number of times. In addition, we suggested an idea to quantify order relations. The idea can quantify each experimental stimulus regardless of the number of experimental stimuli to compare. Therefore, the idea is able to adjust the number of experimental stimuli.
