storing in the storage device test results of the group of test subjects previously tested including scores of a characteristic quantity associated with the performance of each of the plurality of different tasks by each subject of the group of test subjects previously tested;

obtaining test results of the group of test subjects previously tested and of a currently tested subject with magnetic sensors that obtain hand motion data of the subject being tested for each of the plurality of different tasks,

wherein the magnetic sensors are coupled to an analog/digital conversion circuit that converts an analog waveform signal detected by the magnetic sensors into a digital waveform signal by sampling, the digital waveform signal is input to a motion sensor control part that includes an alternating current (AC) generation circuit, a current generation amplifier circuit, a preamplifier circuit, a detection circuit, an LPF circuit, a phase adjustment circuit, an amplifier circuit, and an output signal terminal, the motion sensor control part outputting a time-series waveform signal from which the characteristic quantity associated with the performance of the plurality of different tasks is obtained;

dividing the scores of the previously tested subjects into two groups, by discriminating between a first group of the previously tested subjects having a score less than a threshold N, N being an integer in a predetermined range of integers, and a second group of the previously tested subjects having a score equal to or more than the threshold N, based on an appearance frequency distribution with respect to the characteristic quantity of the first group and an appearance frequency distribution with respect to the characteristic quantity of the second group;

calculating a discrimination accuracy value (AUC) for each of a plurality of the thresholds N in the predetermined range corresponding to each reference task of the plurality of different tasks and storing a combination of the reference task and AUC value for each of the thresholds N for the predetermined range into an evaluation accuracy database;

selecting from the evaluation accuracy database one of the plurality of the thresholds N, for each reference task stored in the storage device, having a maximum accuracy value as a maximum accuracy value threshold Nmax; and

applying the maximum accuracy value threshold Nmax to the score of the characteristic quantity associated with the performance of the reference task by a current test subject to discriminate the score on the basis of the threshold Nmax and determine in which one of the first and second groups that the score of the characteristic quantity associated with the performance of the reference task is grouped as a representation of the motor function and cognitive function of a current test subject.