1. A display control method, comprising: receiving an input of a frame advance instruction of an image displayed on an image display section, and making a determination of a degree of attention of a user with respect to the image displayed on the image display section after a predetermined number of frames are advanced in response to the frame advance instruction, based on a duration of display time when the image is displayed and an average duration of display time of the predetermined number of frames of images, the predetermined number of frames of images including at least an image being lastly displayed in response to the frame advance instruction, after an image display start instruction is detected; detecting an attention identifier which is assigned to an attention image determined to have a value of the degree of attention equal to or greater than a predetermined value in said receiving the input, the attention identifier indicating a plurality of attributes of the attention image; detecting images to be displayed having the attention identifier, performing a display control of the image display section so as to display only the images to be displayed in response to a frame advance instruction received after the display control is started; and calculating and updating the average duration of display time each time the image is frame-advanced, wherein, when a frame advance operation is detected after the predetermined number of frames of images are displayed, on a basis of a determination result of the degree of attention, the image display section displays image data determined to have a highest degree of attention of the user from among image data later in a frame advance order, wherein, the degree of attention of the user with respect to the image is converted to a numerical value based on a number of identifiers matched between an identifier determined to have the highest degree of attention of the user and an identifier extracted from the image or a ratio of a number of identifiers, and if the numerical value of the degree of attention is equal to or greater than a predetermined value, the image is to be frame advanced.