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Abstract­—Design thinking is a creative method used to solve complex problems. This issue- oriented problem solving fundamentally involves the group operation of members from different fields. The creativity of design thinking is manifested in identifying the real problem and then developing the optimal solution with interdisciplinary collaboration. The group process which called the double diamond model with explorations of problem and solution in each diamond respectively. The creativity operates in design thinking manifested in the divergence and convergence of each diamond. The design thinking operates in a dynamic way with iteration among each step. However, the existing theories or practices lacked a clear discussion on how to migrate divergence to convergence, which is called the Groan Zone. The operation at this stage is critical in the transformation mechanism for effective creative performance. Therefore, the purpose of this research is to explore how group process in design thinking can effectively transfer in divergence and convergence, thus, to completely understand the mechanism of creative performance in design thinking.
The research methods of this study were framed in three phrases in progress way. (1)first explores the operation process between different stages of design thinking, and most important to identify the operating mechanism of Groan Zone from divergence to convergence drawing on literature review, (2)and further explores the factors that affect the mechanism. (3)Next, given that design thinking often takes the course of the group operation of the workshop, the research method employed of this research is to observe the creative performance of the actual cases of the design thinking workshop, especially the group behavior from divergence to convergence in each stage.

Keywords: design thinking, workshop, facilitator, divergent thinking, convergent thinking, groan zone