PROBLEM TO BE SOLVED: To provide a motion state and psychological state determination method for outputting a present motion state and a present psychological state (motion state and psychological state to be determined) with respect to a reference motion state and a reference psychological state (correct motion state and better psychological state).SOLUTION: In a motion state and psychological state determination method, a motion state and a psychological state of a primary subject are determined or stored at least based on primary biological information acquired from the primary subject who engages in a predetermined motion, and a motion state and a psychological state of a secondary subject are determined based on secondary biological information acquired from the secondary subject who engages in a predetermined motion. The motion state and the psychological state of the primary subject are compared with the motion state and the psychological state of the secondary subject, and the result of the comparison
