An object of the present invention is to urge a user, in a manner easily recognizable to the user, to stop speaking. A control section (10 or 70) obtains a voice. The control section (10 or 70) includes: a concurrence determination section (11) configured to determine, on the basis of the voice, whether or not concurrent occurrence of speech has taken place; and a driving control section (13) configured to, in a case where the concurrent occurrence of speech has taken place, control a driving section (30) of a robot (1 or 2) so as to cause a movable part (40) of the robot to make a deterrencemotion.
Control device, robot, control method, and storage medium