PROBLEM TO BE SOLVED: To provide a motion state and psychological state feedback method, system, and program for feed-backing a present motion state and a present psychological state with respect to a reference motion state and a reference psychological state to a subject.SOLUTION: In a motion state and psychological state feedback 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 at least 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 according to the result of comparison of the motion state and the psychological state of the primary subject with the motion state and the psychological state of the secondary subject, an emphasized or dwarfed feedback signal is output.SELECTED DRAWING: Figure 6A
