1. A control method for a device utilizing an electroencephalogram, comprising: step (a) of presenting a visual stimulation concerning a manipulation menu for a device; step (b) of measuring a plurality of event-related potentials after the visual stimulation is presented, where a plurality of event-related potentials based on a timing of presenting the visual stimulation as a starting point are measured from a potential difference between each of a plurality of electrodes worn on a face of a user and at least one reference electrode worn in an ear periphery of the user; step (c) of, from each of the plurality of measured event-related potentials, extracting electroencephalogram data which is at 5 Hz or less and contains a predetermined time section, and combining the extracted electroencephalogram data into electroencephalogram characteristic data; step (d) of comparing the electroencephalogram characteristic data against reference data, the reference data being prepared in advance for determining a desire to select an item in the manipulation menu; and step (e) of, based on a result of comparison of step (d), executing a manipulation of the device corresponding to the item in the manipulation menu.