An assessment device (100) acquires a pulse-wave waveform (110) that indicates changes over time in the pulse waves measured in a subject. The assessment device (100) calculates a value that indicates a degree of coincidence between the acquired pulse-wave waveform (110) and a model expressed as a function (F) expressing changes over time in the blood flow volume associated with a heartbeat (contraction/expansion). The assessment device (100) assesses, on the basis of the calculated degree of coincidence, whether or not noise is present in the pulse-wave waveform (110). The assessment device (100) outputs the assessment result, whereby it becomes possible to identify pulse-wave waveforms that include noise attributed to body motion, etc.
