This is a category ratio scale with values from 1 to 10

Verbal anchors again used, but with more numbers at the higher end of the scale to account for the 1.6 exponent found with Steven's law which was a problem with the Borg RPE scale because for the same increase in absolute value of workload, this produced larger and larger changes in the perception of exertion as the workload gets higher.

There is no upper limit to the scale and participants can use fractions to describe level of exertion.

This scale is not paralleled with any of the physiological measures of exercise intensity as for the Borg RPE Scale, but the number of inferences and statistical procedures that can be carried out with data from this scale is much greater. For example, if a participant reports a value twice as high as a second person, then it is legitimate that the person is actually working twice as hard. This scale can legitimately make interindividual comparisons

This scale was developed using scaling methods such as ratio estimation and magnitude estimation.