Abstract
It has been well known that a room with a bright color is perceived larger than that with a dark color. In this report, we examined whether the pattern of wallpaper itself could affect the perceived size of a room. We measured the apparent size of the room having stripes on the walls; a miniature room (Exp.1) or a real room (Exp.2). The orientation of the stripes was horizontal or vertical. We found that the room with horizontal stripes looked wider (Exp.2) or wider and deeper (Exp.1) than that with vertical stripes, but that the room with horizontal stripes looked shorter in the height than that with vertical stripes (Exp.1).
