PROBLEM TO BE SOLVED: To improve the accuracy of visual line detection.SOLUTION: A gaze point detector comprises: a display unit a voice output unit for outputting voice an imaging unit for capturing an image of a subject a visual line detection unit for detecting a direction of a subjects visual line from a captured image taken by the imaging unit a view point detection unit for detecting the subjects view point in a display area of the display unit on the basis of the direction of the visual line an output control unit for making the display unit display a diagnosis image including a first object representing a form of a person acting in accordance with the voice and a second object produced by rotating the first object acting in accordance with the voice and an evaluation unit for evaluating the degree of the subjects developmental disability on the basis of a view point detected by the view point detection unit when the diagnosis image is displayed.SELECTED DRAWING: Figure 3
