Cognitive function evaluation system and learning method

A cognitive function evaluation system, comprising:

• a motion detector that captures images of a subject performing a predetermined task to generate frames representing three-dimensional coordinates of all joints of the subject whose images have been captured, the frames being a series of frames generated in time order;
• an answer detector that detects answers to questions on a predetermined cognitive examination by the subject performing the predetermined task;
• and
• an evaluator that outputs motion features based on the frames and evaluates a cognitive function of the subject based on the motion features and the answers detected by the answer detector, the motion features representing a feature of a spatial positional relationship of all the joints and a feature of temporal variations of each of the joints, wherein
• the predetermined task includes
• a physical task that requires the subject to perform a predetermined behavior, and
• a cognitive task that requires the subject to answer the questions on the predetermined cognitive examination, and
• the motion detector captures the images of the subject performing the physical task to generate the frames.