Abstract
A number of research topics have been proposed on the mechanism of face cognition. One interesting topic involves the identification of types of facial features that attract more attention and stay longer in memory when humans observe faces. This paper examines this topic using subjective evaluation experiments that facilitate the judgment of resemblance between two face images. This approach not only focuses on particular facial parts such as eyebrows, eyes, mouth and facial contour, but also it examines combinations of multiple facial parts. We also compare parallel and sequential presentations of two faces to identify the peculiar shape features of facial parts that stay longer in our memory. Experimental results indicate that there is a certain tendency between facial features and their cognition by humans.