|In evaluation, evaluators and evaluations should not only be valid but must be seen to be valid which denotes credibility which is a attribute of validity itself. To be credible, an evaluation should hold meaning for stakeholders, provide comprehensive data and detail to enable knowledge transfer and lend itself to generalizations. In sum, the evaluation must be judged to be authentic in order for the credibility label to hold true.|
- Mathison, Sandra. Encyclopaedia of Evaluation, pp 287, Ed. University of British Columbia. Thousand Oaks, CA: Sage Publications, 2005.