A movement restriction unit restricts a movement of a movement subject within a display screen or a virtual space in a case where a numerical value indicating a magnitude of a displacement between a position of a hand or the like of a user and a reference position or a reference direction is smaller than the first reference value. A first movement control unit moves the movement subject at a first speed in a case where the above-mentioned numerical value is equal to or larger than the first reference value and smaller than a second reference value that is larger than the first reference value. A second movement control unit moves the movement subject at a second speed that is faster than the first speed in a case where the above-mentioned numerical value is equal to or larger than the second reference value.