INFORMATION DISPLAY DEVICE AND INFORMATION DISPLAY METHOD

The present invention provides an information displaying apparatus which efficiently arouses an interest of the audience member to content to be displayed. An information displaying apparatus (10) includes: a displaying unit (14) which displays first content on a display; an audience state detecting unit (11) which detects an audience state representing a physical state of an audience member positioned in front of the display; an interest degree estimating unit (12) which estimates an interest degree based on the audience state detected by the audience state detecting unit (11), the interest degree indicating a degree of interest of the audience member in the first content displayed on the display by the displaying unit (14); and a display control unit (13) which causes the displaying unit (14) to display second content with a clarity degree or an exposure degree of at least a part of the second content reduced below a predetermined clarity degree or a predetermined exposure degree when magnitude of a change rate of the interest degree estimated by the interest degree estimating unit (12) is smaller than a first threshold.