A perusing determination device, includes a computer processor, the device includes, an eye tracking unit configured to detect a movement direction of line-of-sight of a user who reads a document； a return movement counting unit configured to count a first number of times in which the movement direction of the line-of-sight is reversed from a direction in which the document is to be read； and a determination unit configured to determine whether or not the user peruses the document, based on the first number and a second number of times in which the movement direction of the line-of-sight is reversed that is to be satisfied at a time of perusing and is defined based on a feature of the document.
