Abstract
This research aims to clarify the mechanism of recognition of shape in each product and the criteria based on the resemblance for a digital audio player. At first, we judged the similar level by acknowledged part that the questionnaire survey by the paired comparison. Examines are four students who are majoring in the design and five ordinary users. Secondly, we were able to divide the feature of the recognition of shape into three groups of "Clear feature", "Composition of shape", and "Details". Finally, we clarified two features depending on the feature of shape in the structure of feature grasp of user. One is surface identification and the other is structural identification of distinguished by knowledge concerning of shape.
