Rubrics: A method for surfacing values and improving the credibility of evaluation. Journal of MultiDisciplinary Evaluation Vol. 9, No. 21.

This practice-based article unpacks the learnings of a group of
evaluators who have used evaluative rubrics to grapple with
this challenge. Compared to their previous practice,
evaluative rubrics have allowed them to surface and deal with
values in a more transparent way. In their experience when
evaluators and evaluation stakeholders get clearer about
values, evaluative judgments become more credible and
warrantable.