R.W. Scholz, A. Zimmer Editor´s preface: Qualitative aspects of decision making - a challenge for decision research A. Zimmer Why do real-world problems necessitate a qualitative approach to decision making? T. Wallsten, D. Budescu, C. Tsao Combining linguistic probabilities G. Oden, L. Lopes Risky choice with fuzzy criteria J. Fox, R. Cooper Cognitive processing and knowledge representation in decision making under uncertainty G. Gigerenzer Ecological intelligence: an adaption for frequencies H. Jungermann Reasons for uncertainty: from frequencies to stories A. Zimmer Some evidence in support for a qualitative approach in decision making R.W. Scholz, H.A. Mieg, O. Weber Mastering the complexity of environmental problem solving by the case study approach