An information processing section that outputs video images with settings based on variables respectively provided to individual display sections of a plurality of display sections is included, and a video image is output to any display section from this information processing section. A setting of the video image output to the any display section is changed, and a response of a viewer at that time is obtained by a response obtaining device. Then, in accordance with the response information of the viewer obtained by this response obtaining device, a display section in which a setting of the video image is to be changed and the setting of the video image are determined by a stimulus response estimation section, and information of the display section in which the setting of the video image is to be changed and a variable based on the setting of the video image are output to the information processing section.