Both ratings consists of a visual analogue scale is a premeasured 100-mm scale that can be used to represent symptom intensity visually. Each scale is anchored at its ends by opposing feelings descriptors. Volunteers will be asked to describe their feelings by placing a vertical mark along the line that best represents the intensity of a given feelings about the solution. The distance of this mark from the appropriate anchor is measured and then translated into a score, ranging from 0 (none or best possible) to 10 (worst possible).