Psychophysical Applications of Interval Scales Based on Operations
The theory of scaling originated in the field where measurement was first applied—in physics. Almost all physical properties admit an additive operation, the only outstanding exception being temperature. Obvious examples of additive properties are length and mass. In the case of mass, for example, the order relation is established by comparing two masses by a balance with equal arms. Addition is performed by putting the masses to be added in the same scale of the balance. A less obvious example of an additive physical property is intensity of lighting (Campbell and Dadding, 1922).
Unable to display preview. Download preview PDF.