 Ordinal measurability with interpersonal level comparability (OLC): Two profiles \(\langle W_1, W_2 , \ldots ,W_n\rangle\) and \(\langle W^*_1, W^*_2,\ldots, W^*_n\rangle\) contain the same information whenever, for each \(i \in N\), \(W^*_i = \phi(W_i)\), where \(\phi\) is the same positive monotonic transformation for all individuals.