Provided is a cognitive function evaluation device (100) comprising: an acquisition unit (110) for acquiring voice data representing a voice uttered by a subject (U) being evaluated; a computation unit (120) for extracting a plurality of vowels from the voice data acquired by the acquisition unit (110), and for each of the plurality of vowels, computing a feature value based on the frequency and amplitude of one or more formants obtained from the spectra of the vowels; an evaluation unit (130) for evaluating the cognitive function of the subject (U) from the feature values computed by the computation unit (120); and an output unit (140) for outputting the result of the evaluation carried out by the evaluation unit (130).
COGNITIVE FUNCTION EVALUATION DEVICE, COGNITIVE FUNCTION EVALUATION SYSTEM, COGNITIVE FUNCTION EVALUATION METHOD, AND PROGRAM