Abstract
When designer consider about the category that design object belongs to in the thinking process for creating new design, understanding way of design objective statement and expression way of design image can widely vary depends on the difference of thought whether put weight to keep prototype image of the category or to break away from it to make new product image. I n this paper, the problem that how difference of the design objective statement influences to the prototype image of the category of design object was confirmed by two design experiments, and tried to get a clue for promoting creative design thinking. Consequently, it was found that following method is effective to promote creative design thinking: firstly giving design objectives from higher hierarchy of category which design object belongs to and then make search for suitable design object that belongs to base category i n the results of it. And also found that to give intentionally wider context around the design objective can get free from the influence of prototype.
