Social judgment theory (SJT) is a method for eliciting opinions about the relative importance of multiple objectives or attributes. When SJT is used to elicit the opinions of individuals who form a group, one must consider by what method these individual opinions can be aggregated to represent the group's opinion. This article suggests a functional form for analyzing opinions elicited by SJT and a method for combining individual opinions. It then applies the proposed model to the problem of establishing relative weights for six performance dimensions for a public sector agency. Analysis of data for individuals in two groups indicates that both interaction and quadratic terms are important in describing how individuals evaluate agency performance. Further, individ ual methods of agency evaluation are so diverse that a random coefficient model of valuation for the group as a whole is more appropriate than the traditional fixed coefficient model.
