1. A liquid crystal device comprising: a liquid crystal panel configured to display an image; a display control unit configured to cause the liquid crystal panel to display a right eye image to be viewed by a right eye of a viewer and a left eye image to be viewed by a left eye of the viewer in an alternating manner; and a polarity control unit configured to cause a polarity of a drive voltage for the liquid crystal panel to be reversed, wherein the polarity control unit causes the polarity of the drive voltage to be reversed such that, in one cycle including a number of display frames for right and left eye images, the number being a multiple of 8, a combination of polarities for image display in one pair of display frames composed of right and left eye images is one of four combinations and a number of occurrences of each of the four combinations is equal.