Group model building effectiveness: a review of assessment studies<FNR></FNR> The authors gratefully acknowledge David Lane's useful comments on a previous version of this paper as well as the valuable suggestions made by the anonymous reviewers. - Rouwette, Etiënne A. J. A.; Vennix, Jac A. M.; Van Mullekom, Theo (System Dynamics Review (Wiley), 2002)