Abstract
The purpose of this study is to propose a design process model by which one can easily get the proper methods for idea generation support. In this paper, on the basis of previous studies of the design process model and the understanding of design behavior as a part of the general design behavior, a tentative model to be an aid of developing methods for idea generation support is proposed. In the design process, designer often needs a stage of "changing thought" at the turning point in spirally iterated processes of "problem grasp", "solution search" and "evaluation". If the designer needs "thought change" at the path to "problem grasp", a structurized expression of the problem should be made. If he needs it at the path to "solution search", the associations and / or the analogies should be promoted. If he needs it at the path to "evaluation", his criteria by which he decides his evaluations should be clarified.
