A Group Decision-making Evaluation Method Based on Policy-makers' Rational BehaviorZHANG Jun,ZHANG Wei (School of Management,Wuhan University of Technology,Wuhan 430070,China)Based on summing up the previous numbers of evaluation methods of group decision support system and the fact of policy-makers preference issues that existed in decision-making,this article raised a group decision-making evaluation method.In order to narrow and reduce the phenomenon of great error brought by decision-makers' preference,this article addresses an assumption that decision-makers are rational.Combined with examples of evaluation for teachers' titles,it further demonstrated the feasibility of the method.rational behavior;group decision;evaluation method