In the 40s, a group of researchers tried to create a quantitative pain scale called the dol (dolor is the Latin word for pain). The dol pain scale had a maximum of 10.5.One study burned medical students on their foreheads leaving 2nd degree burns to try to discern a scale as well as arithmetic conclusions like 8 dols of pain equaled four successive 2 dol experiences.The researchers also burned women in labor on their hand at the assumed pain level of her next contraction to be able to measure contractions in dols. Hardy, the researcher quantified that the first stage of labor is 2 dols, crowning is 10.5 dols, and 2 hours after pain is between 0 and 3 dols.