the researchers concluded that the most unpleasant, the peak, and the final intensity of unpleasantness, the end were used to evaluate the procedure. in this case, the end of group b is less unpleasant. at the same time, the peak of both group a and group b were the same. thus, the sum of the unpleasantness of the peak and the end was less for group b. as a result, participants from group b found the experience less unpleasant, although for both the duration of and the sum of unpleasantness, group a &lt; group b.