Multivocal literatures are comprised of all accessible writings on a common topic and embody the views of diverse authors. The exploratory case study method is proposed as a way to ensure rigor in reviews of such literatures because it addresses problems associated with the selective use of data. (SLD)

In program evaluation and policy analyses, utility supplants rigor as the first and most important criterion in judging literature reviews. Although R. T. Ogawa and B. Malen emphasize rigor, a utilization-focused evaluation emphasizes purpose and audience, both of which affect the conduct of a multivocal literature review. (SLD)

Reviews of multivocal literature are assessments of what can be learned from a given body of literature and assessments of the claims on which that knowledge is based. Methodological rigor is less likely to be a problem in such reviews than is lack of independent judgment. (SLD)