A new consensus model for the consensus reaching process, in a linguis
tic framework, is presented in heterogeneous group decision making pro
blems, called rational consensus model. It is guided by some linguisti
c consensus and linguistic consistency measures. All the measures are
calculated from a set of linguistic preference relations used to provi
de experts' opinions. This consensus model allows more rational consen
sus solutions to be obtained and thus, more human consistency to be in
corporated in decision support systems. (C) 1997 Elsevier Science B.V.